I seem to have some kind of Trojan/malware which keeps sending people on my Messenger contacts list a link like below through IM:
When they click on the link they are taken to some bogus ad page and then they too become infected. This is how I became infected in the first place: i received such a link from a friend's Messenger.
Also I notice that periodically my messenger just signs out with the message you have signed in on another computer when I have not. This never used to happen in the past so frequently even when I am in the middle of typing an IM. This does not happen on my other computer on the same network.
I have run HijackThis as well but I am not able to determine if there is a malicious entry. I am attaching the logfile to this post.