Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
http://docs.info.apple.com/article.html?artnum=303706
maybe that will help? It is most definitely a software issue, make sure all drivers are up to date, etc.
May have something to do with this:
http://people.bakersfield.com/home/viewblog.php?id=1&pid=391
http://discussions.apple.com/thread.jspa?threadID=560352&tstart=0
do some more googling - I have heard alot about people having trouble with itunes and video/audio playback recently.