HL2DM crash to desktop

[Das Kloon]

Sometimes after playing HL2DM for a while it'll just beep an' crash to my desktop without any errors. As far as i know this's only started happening recently, although i've not really played DM much until now; only CS:S and HL2 singleplayer (both run fine with no such problems). Apologies if anyone's posted this problem before. im too tired to check. Wondering if anybody had any ideas, or has similar problems.

Cheers,
Das Kloon

System specs:
Athlon XP3000+
1 gig RAM
GeForce FX5200
Some onboard sound dealie that works with everything else and almost certainly isn't the problem.

 

[BOYD1981]

i've started having the same problem, but it happens in single player too