My pleasure.

I've heard from a large number of folks today in response to this mailing. Including a number of IT folks who deal with a lot of Macs in an enterprise context. Not a single one has seen a single infection.

However, I want to reiterate that Flashback is real, that it is very nasty, and that everyone really should take steps to protect your Mac from it. Fortunately you don't need anti-virus software to do so, and so far Flashback is extremely rare in the Western world.