On May 27, I installed Vista's new service pack.
The installation went off without a hitch, or so I thought.
I just realized that between May 27 and today, my Avast Home Edition 4.8.1335 has not automatically downloaded its virus signatures even once, as shown by its update log.
Has anyone else with Avast Home Edition run into this conundrum? I can still update manually, but the automatic updates were so convenient.
Could Windows Firewall be blocking Avast from updating? Would a repair installation of Avast or even uninstalling and reinstalling be advised?