Gameplay freezes, adn then completely freezes

[TalinXT]

Afternoon, When I play any sort of game and soemtims on the game map the game appears to randomly freeze the models adn sounds quit going but it sems i can still access menus even though they quit going as wel. The game isfully patched adn I jsut updated the drivers to the videocard. The game runs perfectly smooth without any stallign or choppiness right up to this point.

OS: Windows XP
Processor: AMD Sempron 2200+
Video Card: Radeon 9600
RAM: 1gig


Any sugestions?

[TBS]

Could be heat issues, open up your case and see if its dusty in there.