I'm not sure whats wrong...

[Chameleon]

I don't know whats wrong but when I join certain servers on CoD4 I can play for a while then my game crashes and kicks me out the game, and comes up with "iw3mp.exe has stopped working" I can't even play on the eGO servers because it kicks me from them, any help would be great.

 

[frost889]

If it's through Origin or Steam that you're launching the game, try repairing the install. If not, try a fresh re-install.

 

[Dr3am]

In our CoD division discussion, some other people are having similar problems:
http://edge-gamers.com/forums/showthread.php?t=225390

 

[FireHazard772]

If you haven't already found a fix,

Another possibility of sorts might be that you have low-freespace on your hard drives - If so, might need to free some space up.

Also, in either case, perhaps doing a Disk-Cleanup would help as well.