Hi guy's!! Got another issue with my Sapphire Radeon 9800PRO Ultimate Edition...... When i play Doom3, everything works fine for about 1 1/2 hour, then it starts to lag big time!! This happends only when the videocard is pushed, like under heavy fire or being attacked by those nasty creatures..... I have a Chieftec Dragon Matrix with one 80mm intake fan in front, one 80mm intake in the door blowing directly on the videocard, and two 80mm exhaust fans in the rear.... The videocard itself doesn't have any fans, but the huge Zalman heatsink...... My resolution is 1024*768, in high mode..... Do you guys think this can be a temperature issue ??? Have anyone encountered the same issues as i have??? The videocard is a mere 2 weeks old.... Any suggestions would be greatly appreciated!!!!!!