I have a Turbo that from dead cold will work just fine for about 5 minutes and the freeze up. You can then power it off and back on and it will stay working for a shorter period of time. Wash, rinse, repeat and eventually it won't do anything but show a white, yellow, or purple screen. A few times as it starts to freeze up the music has sped up to double speed or slowed down to half speed. Any thoughts?
sounds like the V-Sync may be dropping out on the 6260
Another thing that happened last night was that when it froze up the screen would duplicate itself into four scaled copies of itself.