I'd be interested to hear HOW you victims were caught!
Picked mine up from iMdB checking out who the gorgeous actress in The Sea Wolves is/was. (Barbera Kellerman if anyones curious).
Avast would scan but CCleaner wouldn't. I did a system restore to the previous week and ran CCleaner in safe mode. This seemed to do the trick. A quick (half an hour) Avast system scan picked up nada, but all seems ok now.
It seems a Java vulnerability is letting it in, from what I can glean from the t'interweb.
Thanks for the link to Mbam.