Well, it would appear that Flashback isn't the only trojan Mac users have to worry about now.

I've been trying to remove OSX/Sabpab-A from my machine for about an hour and it keeps coming back despite the latest definitions being loaded in VirusBarrier.
Instructions for removal can be found here

Edit

Appears to have been cleared up. Only worked after I had removed the affected files from my TimeMachine backup as well and restarted.

So, Apple's tardiness strikes again. Grr.

just checked my system all clear of that one but did find an infected file in user/lib/mail/pop/junk ...