help

[Kaltagesta]

in the last few days i have repeatedly been kicked out the game, sometimes to the desktop and sometimes it restarts my computer. i havent installed any new hardware of software and it has only just started happening. i think it may be overheating as it happens quicker and quicker the more i use it (e.g., when i turn it on in the morning i can play for 45 mins without it kicking me, but then the next time 40, then 35 etc).

anyone know whats doing on?

1Gig Duron
512 SDRam
GeForce MX440 128mb