The Bropia worm has been making lots of news lately. But we didn't get too many real reports about it.
However, it is out there. We just got a call from Costa Rica from a company which reported a large-scale infection.
Since this worm spreads over MSN Instant Messenger, it can spread fairly fast in an environment where MSN chat is used. Do note this is not an automatic network worm; it still needs the recipients to accept the incoming file and run it.
The worm will display an image of a grilled chicken on infected computers: