If your'e a Skype user, be aware that a worm is spreading across the Skype network. The worm sends you a short chat message from a buddy's Skype client, asking you to open a malicious file, ostensibly sent to you by your buddy.

They're calling this trojan "Ramex" or "Skipi", and, at least as of last night, Symantec and F-Secure both contain updates for their anti-virus software to block it, so update your virus definitions. In the meantime, a little bit of vigilance goes a long way. So far, it appears Mac and Linux users aren't affected.