It means you picked up a virus/trojan while downloading from Gnutella. I suggest you use an Anti Virus scanner ASAP! Here's a trusted site with some free ones if you dont have an AV:


http://www.snapfiles.com/freeware/security/fwvirus.html


Limewire should NEVER open on its own or run on its own. When that happens that means you got infested.

also did you get limewire from: www.limewire.com?