xfire issues

Everytime I use xfire while playing DoD or any other game, it would sometimes kick me off the game or cause extreme amount of lag. I'm guessing it's abnormal for it to kick me off, but what about that random lag spikes? Thanks in advance.
I got that too on my old comp, and on this new comp it sometimes kicks me off with the reason of abnormal map :)

Let's wait for advices.