I went into minecraft forge 1.6.4, and all of a sudden, it wouldn't load. After that, my computer started to slow down to the point to where if I clicked on anything, it wouldn't even open. After that, my computer started to black screen 2 times in a row, and when I went into Windows Task Manager, it showed that the computer's CPU usage was 100%. Eventually, I decided to do a hardcore shutdown on the computer. So, minecraft forge, I think your download has a virus in it. IT SCARED THE CRAP OUT OF ME!!!!!!!