I updated Firefox to the latest version today, Firefox 13.0. How ever, when the installer was just finished and before Firefox opens up after the update, my Avast! 7 FREE popped up about suspicious behavior in a temp folder. I use Avast! 7 free anti virus, and Malwarebytes. I ran a scan with Malwarebytes before Avast! and it found nothing. It had to be Firefox causing the alert, because Firefox would not open until I allowed it through the alert. I also ran a scan with Avast! 7 after that and beyond logic... there was nothing.
So this update must have triggered an alert!
Did anyone have the same problems when updating Firefox if you use Avast! 7 on Windows 7?
Some system details..
Windows 7 Home Premium
Firefox 13.0
Avast! 7 - 7.0.1426
Virus Definition at time of alert: 120605-1