Me too, same problem yesterday, after update to 4.7.1001. and latest updates XP prof servicepack 2 CPU usage 100% ashserv.exe in taskmanager. PC couldn't shut down normally, only hard reset possible. Before update no problems.
Today several times a popup window: "Avast needs to restart" etc coming from nowhere (Popup window normally appears after an update) but no slow downs.
Very annoying
Windows XP prof servicepack2
IE7
No other virus programs (never had
)
Windows firewall (didn't make any changes neither before or after update)
After restart everything seems fine for now. In the event viewer no problems related to avast.
I will come back when problems starting again and will follow your instuctions for shutting down the services etc.