I recently re-installed Avast (5.0.677 because the more recent version seriously crashed my computer). Now Avast doesn't seem to start with my computer. After startup, AvastSvc.exe is running, but there is no icon in the taskbar. AvastUI.exe doesn't run until I start the program. I've ticked AvastUI in the startup tab of msconfig so it will run at startup, but after rebooting, the tick is always gone. Any suggestions? Win XP SP3