This problem is a very time consuming one because it is. I decided to install Forge since most mods are compatible with it. However, after I installed it, Minecraft with Forge installed takes almost 5 or 10 minutes to load up. After that amount of time, I can finally play on Minecraft after the excessive time of waiting. My theory of what is happening is that Forge is downloading its files over and over again after it has been installed. I have tried uploading the log from the console a multitude of time so I have copied/pasted it below. I will warn you that it is long. If a Forge client log is needed, tell me and I will post it under this topic. Help with this problem is greatly appreciated.

**If you want a video of how long it takes, I will gladly post a link to it in this post. I will do a comparison of how long it takes with and without Forge installed.

 

This is the Log in the Console of the Minecraft 1.6.1 Launcher:

Launcher 1.0.8 (through bootstrap 4) started on windows...

System.getProperty('os.name') == 'Windows 8'

System.getProperty('os.version') == '6.2'

System.getProperty('os.arch') == 'amd64'

System.getProperty('java.version') == '1.7.0_17'

System.getProperty('java.vendor') == 'Oracle Corporation'

Going to log in with legacy stored username & password...

Loaded 2 profile(s); selected 'Forge'

Trying to log in...

Logging in with access token

Logged in successfully

Delta time to compare resources: 376 ms

Download job 'Resources' skipped as there are no files to download

Job 'Resources' finished successfully

Going to log in with legacy stored username & password...

Trying to log in...

Logging in with access token

Couldn't go online

net.minecraft.launcher.authentication.exceptions.InvalidCredentialsException: Invalid token.

at net.minecraft.launcher.authentication.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:123)

at net.minecraft.launcher.authentication.yggdrasil.YggdrasilAuthenticationService.logInWithToken(YggdrasilAuthenticationService.java:97)

at net.minecraft.launcher.authentication.yggdrasil.YggdrasilAuthenticationService.logIn(YggdrasilAuthenticationService.java:50)

at net.minecraft.launcher.ui.sidebar.login.NotLoggedInForm$1.run(NotLoggedInForm.java:162)

at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)

at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)

at java.util.concurrent.FutureTask.run(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

 

Going to play offline as 'Sku11n3nd0'...

Going to log in with legacy stored username & password...

Trying to log in...

Logging in with access token

Couldn't go online

net.minecraft.launcher.authentication.exceptions.InvalidCredentialsException: Invalid token.

at net.minecraft.launcher.authentication.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:123)

at net.minecraft.launcher.authentication.yggdrasil.YggdrasilAuthenticationService.logInWithToken(YggdrasilAuthenticationService.java:97)

at net.minecraft.launcher.authentication.yggdrasil.YggdrasilAuthenticationService.logIn(YggdrasilAuthenticationService.java:50)

at net.minecraft.launcher.ui.sidebar.login.NotLoggedInForm$1.run(NotLoggedInForm.java:162)

at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)

at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)

at java.util.concurrent.FutureTask.run(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

 

Going to play offline as 'Sku11n3nd0'...

Going to log in with legacy stored username & password...

Trying to log in...

Logging in with access token

Couldn't go online

net.minecraft.launcher.authentication.exceptions.InvalidCredentialsException: Invalid token.

at net.minecraft.launcher.authentication.yggdrasil.YggdrasilAuthenticationService.makeRequest(YggdrasilAuthenticationService.java:123)

at net.minecraft.launcher.authentication.yggdrasil.YggdrasilAuthenticationService.logInWithToken(YggdrasilAuthenticationService.java:97)

at net.minecraft.launcher.authentication.yggdrasil.YggdrasilAuthenticationService.logIn(YggdrasilAuthenticationService.java:50)

at net.minecraft.launcher.ui.sidebar.login.NotLoggedInForm$1.run(NotLoggedInForm.java:162)

at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)

at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)

at java.util.concurrent.FutureTask.run(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

at java.lang.Thread.run(Unknown Source)

 

Going to play offline as 'Sku11n3nd0'...

Trying to log in...

Logging in with username & password

Logged in successfully

Getting syncinfo for selected version

Queueing library & version downloads

Download job 'Version & Libraries' started (8 threads, 25 files)

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\net\minecraftforge\minecraftforge\8.9.0.772\minecraftforge-8.9.0.772.jar for job 'Version & Libraries': Couldn't connect to server (responded with 404) but have local file, assuming it's good

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\14.0\guava-14.0.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\4.1\asm-all-4.1.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\argo\argo\2.25_fixed\argo-2.25_fixed.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.3\launchwrapper-1.3.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.2\gson-2.2.2.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\org\bouncycastle\bcprov-jdk15on\1.47\bcprov-jdk15on-1.47.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput-platform\2.0.5\jinput-platform-2.0.5-natives-windows.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl-platform\2.9.0\lwjgl-platform-2.9.0-natives-windows.jar for job 'Version & Libraries': Used own copy as it matched etag

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\versions\Mods\Mods.jar for job 'Version & Libraries': Couldn't connect to server (responded with 403) but have local file, assuming it's good

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-library\2.10.2\scala-library-2.10.2.jar for job 'Version & Libraries': Didn't have etag so assuming our copy is good

Finished downloading C:\Users\joshua\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-compiler\2.10.2\scala-compiler-2.10.2.jar for job 'Version & Libraries': Didn't have etag so assuming our copy is good

Job 'Version & Libraries' finished successfully

Launching game

Looking for old natives to clean up...

Deleting C:\Users\joshua\AppData\Roaming\.minecraft\versions\Forge8.9.0.772\Forge8.9.0.772-natives-41200566445522

Unpacking natives to C:\Users\joshua\AppData\Roaming\.minecraft\versions\Mods\Mods-natives-41270610844741

Launching in C:\Users\joshua\AppData\Roaming\.minecraft

Running C:\Program Files\Java\jre7\bin\javaw.exe -Xmx1G -Djava.library.path=C:\Users\joshua\AppData\Roaming\.minecraft\versions\Mods\Mods-natives-41270610844741 -cp C:\Users\joshua\AppData\Roaming\.minecraft\libraries\net\minecraftforge\minecraftforge\8.9.0.772\minecraftforge-8.9.0.772.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\net\minecraft\launchwrapper\1.3\launchwrapper-1.3.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-library\2.10.2\scala-library-2.10.2.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-compiler\2.10.2\scala-compiler-2.10.2.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\org\ow2\asm\asm-all\4.1\asm-all-4.1.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\net\sf\jopt-simple\jopt-simple\4.5\jopt-simple-4.5.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\lzma\lzma\0.0.1\lzma-0.0.1.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\com\paulscode\codecjorbis\20101023\codecjorbis-20101023.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\com\paulscode\codecwav\20101023\codecwav-20101023.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\com\paulscode\libraryjavasound\20101123\libraryjavasound-20101123.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\com\paulscode\librarylwjglopenal\20100824\librarylwjglopenal-20100824.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\com\paulscode\soundsystem\20120107\soundsystem-20120107.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl\2.9.0\lwjgl-2.9.0.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\org\lwjgl\lwjgl\lwjgl_util\2.9.0\lwjgl_util-2.9.0.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\argo\argo\2.25_fixed\argo-2.25_fixed.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\org\bouncycastle\bcprov-jdk15on\1.47\bcprov-jdk15on-1.47.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\com\google\guava\guava\14.0\guava-14.0.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\org\apache\commons\commons-lang3\3.1\commons-lang3-3.1.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\commons-io\commons-io\2.4\commons-io-2.4.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\net\java\jinput\jinput\2.0.5\jinput-2.0.5.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\net\java\jutils\jutils\1.0.0\jutils-1.0.0.jar;C:\Users\joshua\AppData\Roaming\.minecraft\libraries\com\google\code\gson\gson\2.2.2\gson-2.2.2.jar;C:\Users\joshua\AppData\Roaming\.minecraft\versions\Mods\Mods.jar net.minecraft.launchwrapper.Launch --username Sku11n3nd0 --session token:fbfd91c4d0da41aaa49f8fd4f60d5d6b:0fdeb6cb9d6c4180b7c77ac195e9eed0 --version Mods --gameDir C:\Users\joshua\AppData\Roaming\.minecraft --assetsDir C:\Users\joshua\AppData\Roaming\.minecraft\assets --tweakClass cpw.mods.fml.common.launcher.FMLTweaker

---- YOU CAN CLOSE THIS LAUNCHER IF THE GAME STARTED OK ----

---- YOU CAN CLOSE THIS LAUNCHER IF THE GAME STARTED OK ----

---- YOU CAN CLOSE THIS LAUNCHER IF THE GAME STARTED OK ----

---- (We'll do this automatically later ) ----

Client> Jul 06, 2013 9:50:38 AM net.minecraft.launchwrapper.LogWrapper log

Client> INFO: Using tweak class name cpw.mods.fml.common.launcher.FMLTweaker

Client> 2013-07-06 09:50:39 [iNFO] [ForgeModLoader] Forge Mod Loader version 6.1.34.772 for Minecraft 1.6.1 loading

Client> 2013-07-06 09:50:39 [iNFO] [ForgeModLoader] Java is Java HotSpot 64-Bit Server VM, version 1.7.0_17, running on Windows 8:amd64:6.2, installed at C:\Program Files\Java\jre7

Client> 2013-07-06 09:50:39 [iNFO] [sTDOUT] Loaded 39 rules from AccessTransformer config file fml_at.cfg

Client> 2013-07-06 09:50:39 [iNFO] [sTDOUT] Loaded 106 rules from AccessTransformer config file forge_at.cfg

Client> 2013-07-06 09:50:40 [iNFO] [ForgeModLoader] Found valid fingerprint for Minecraft Forge. Certificate fingerprint de4cf8a3f3bc15635810044c39240bf96804ea7d

Client> 2013-07-06 09:50:40 [iNFO] [ForgeModLoader] Launching wrapped minecraft

Client> 2013-07-06 09:50:41 [iNFO] [Minecraft-Client] Setting user: Sku11n3nd0

Client> 2013-07-06 09:50:41 [iNFO] [Minecraft-Client] (Session ID is token:fbfd91c4d0da41aaa49f8fd4f60d5d6b:0fdeb6cb9d6c4180b7c77ac195e9eed0)

Client> 2013-07-06 09:50:42 [iNFO] [Minecraft-Client] LWJGL Version: 2.9.0

Client> 2013-07-06 09:50:42 [iNFO] [Minecraft-Client] Reloading ResourceManager: Default

Client> 2013-07-06 09:50:43 [iNFO] [sTDOUT]

Client> 2013-07-06 09:50:43 [iNFO] [sTDOUT] Starting up SoundSystem...

Client> 2013-07-06 09:50:43 [iNFO] [MinecraftForge] Attempting early MinecraftForge initialization

Client> 2013-07-06 09:50:43 [iNFO] [sTDOUT] MinecraftForge v8.9.0.772 Initialized

Client> 2013-07-06 09:50:43 [iNFO] [ForgeModLoader] MinecraftForge v8.9.0.772 Initialized

Client> 2013-07-06 09:50:43 [iNFO] [sTDOUT] Replaced 101 ore recipies

Client> 2013-07-06 09:50:43 [iNFO] [MinecraftForge] Completed early MinecraftForge initialization

Client> 2013-07-06 09:50:43 [iNFO] [sTDOUT] Initializing LWJGL OpenAL

Client> 2013-07-06 09:50:43 [iNFO] [sTDOUT]    (The LWJGL binding of OpenAL.  For more information, see http://www.lwjgl.org)

Client> 2013-07-06 09:50:43 [iNFO] [ForgeModLoader] Reading custom logging properties from C:\Users\joshua\AppData\Roaming\.minecraft\config\logging.properties

Client> 2013-07-06 09:50:43 [OFF] [ForgeModLoader] Logging level for ForgeModLoader logging is set to ALL

Client> 2013-07-06 09:50:43 [iNFO] [sTDOUT] OpenAL initialized.

Client> 2013-07-06 09:50:43 [iNFO] [ForgeModLoader] Searching C:\Users\joshua\AppData\Roaming\.minecraft\mods for mods

Client> 2013-07-06 09:50:43 [iNFO] [sTDOUT]

Client> 2013-07-06 09:50:44 [iNFO] [ForgeModLoader] Forge Mod Loader has identified 3 mods to load

Client> 2013-07-06 09:50:44 [iNFO] [mcp] Activating mod mcp

Client> 2013-07-06 09:50:44 [iNFO] [FML] Activating mod FML

Client> 2013-07-06 09:50:44 [iNFO] [Forge] Activating mod Forge

Client> 2013-07-06 09:50:44 [iNFO] [ForgeModLoader] Registering Forge Packet Handler

Client> 2013-07-06 09:50:44 [iNFO] [ForgeModLoader] Succeeded registering Forge Packet Handler

Client> 2013-07-06 09:50:44 [iNFO] [ForgeModLoader] Configured a dormant chunk cache size of 0

Client> 2013-07-06 09:50:45 [iNFO] [ForgeModLoader] Forge Mod Loader has successfully loaded 3 mods

 

 

 

 

Again, Mojang launcher issue not outs. They do not yet support standard maven md5 caching. There issue.