I have got this weird worm on my MSN Live Messenger. Apparently, when any of my contacts comes online, they get spam messages from me. I don't see these message from my end, nor does it ever kick me off the messenger as if I'm being logged in somewhere else. I have run several different spyware scans but none of them have helped fix this. I have tried changing my password and secret q uestion from a clean computer, and I have reinstalled updated versions of MSN Messenger several times. Nothing else on my computer seems to be affected. I have scanned my PC with some scanners that were bundled with Digit last month. I also updated them but this worm doesn't seem to be affected. I have tried using MSN Cleaner but nothing works.

Please help me solving this menace. I had freshly formatted my system before I got this problem. I am facing this problem for first time.