I downloaded Limewire, Started it up and KDE froze, Could not kill X so I hit reset, After booting half my Opera bookmarks were gone and all my opera preferences were reset to the default settings. Ran RKhunter and found a suspicious file called lp45 (it was a binary file) in /dev. I deleted it, It deleted ok, then reboot and reran RKhunter and it was gone. Anyone have any idea about LimeWire being a security threat or maybe use some kind of spyware for linux?

uh... not that I'm aware of. the only security threat limewire can directly cause you, is if you download something bad from limewire. Been using limewire for about a month and both rkhunter and chkrootkit show everything normal - no /dev/lp45. Sounds to me, you might've gotten hit before installing limewire.

Well after checking other things, Alsa no longer works and ALL my logs are gone! F^%$, Guess ill be formatting and reinstalling Slack tonight.
I have been running RKhunter every so often and it did not find anything in the last week. It could have happend at any time and just waiting, like a snake to jump up and steal my bookmarks......LOL.

Its true that limewire can cause X to trash depending on what browser you use. I've never lost any bookmarks, but I've noticed that whenever I launch firefox and then launch Limewire afterwards, my computer crashes.

But I doubt it has anything to do with our logs disappearing. Unless you run limewire in root mode, it can't even touch system files. Limewire is generally regarded as a safe and trusted program. No adware, spyware. Stuff like that. Plus its all java and theres a limited number of things java can do in the first place. Unless you've discovered some crazy program that exploits java to run an executable embedded in the program and use another exploit to run it in root mode, its doubtful that its a security risk. And limewire doesn't look like one of those programs. In fact, I don't think it exists.