Medal Of Honor crashing

Hey, I recently pulled out Medal Of Honor Allied Assault wanting to play it again after my friend told me to join xfire and play. So I did all this, and my game worked fine the first time. The second time I tried to connect to a multiplayer game the game crashed and on the console it said :

Z_TagMalloc: failed on allocation of 1590656 bytes

So I tried again on a different server and it did not work. I got the same message but with a different amount of bytes. So once again i tried a different server and it worked fine.

Well after I quit playing I tried again I have not gotten it to work again. I keep getting the same message.

This is the original game and not a cracked version. I tried uninstalling and reinstalling and it did not work. Could it be becasue of xfire?

Thanks in advance,
Rustious

Oh, I have windows xp and cable internet.