FireFox and counter strike crashing

Whats up homies long time. This is pimpin_228 btw. Anyways i have windows xp installed with all the latest updates installed. But firefox crashes after about 3 mins of use same with counter strike. I was wondering if anyone has any similar problems or how to fix this. Ok thanx

Kaust

System Specs
Athlon xp 2200
gf6600
384 megs of ram