Limewire freezing iTunes on another computer

This is a weird one. I have a Mac OSX 10.3. My roommate has a PC. If I am active on Limewire and he tries to download anything on his PC he gets a message that my Limewire is running and he says it erases his iTunes library. He does not have Limewire on his computer. Has anybody had this problem? Any suggestions?

It happens when he is downlding? Does he use another p2p client? Never heard of anything like that before. Not sure how it could happen for a start. Tell him to turn Sharing off in his iTunes preferences or use a different share name. If you both have the same share name it might cause an issue I don't know.

Thanks. The only thing we share is a common router. I'll ask him about 'file sharing'.