Yet another IE hole. This one is gaping and the workarounds I have seen are not particularly impressive. MS will have to patch quickly, and it will not be in time, as so many machines are already infected.
Also, there is now an exploit that takes advantage of legitimate features in Adobe's Acrobat Reader which requires no user interaction, other than opening what appears to be a legitimate PDF file.
It's not safe out there and it is getting worse. I'll bet the Mac users are in such a smug state right now that they can hardly stand it.