reply to Trooper
Re: What AV are you running? December, 2009. I had powered up the computer and updated it about an hour after the bad definitions had been fixed, then found out that I had dodged a bullet: »blog.avast.com/2009/12/10/bad-de···-update/
There seems to be a more-recent problem with serious FP's on XP SP3, reported at »forum.avast.com/index.php?topic=110828.0
I have been fortunate with Avast so far, but under no illusions.