I haven't heard of any OS X virii, but I won't rule it out as a possibility. I have an icon in the top-left corner of my screen. It's usually a BitTorrent icon, although I've seen a Napster icon there too. I have no idea where these icons could have come from - I certainly don't have any Napster software on my system! In addition, my mouse has been skipping a bit this morning - like having a dirty mouse ball (but I have an optical mouse, and there are no hairs in the sensor). Has anyone else come across this?