system
14
I found this post by accident, but it seems to be the same problem I encountered, updated to 1497 a few days ago and then found I had no internet access. Using a USB attached MIFI dongle, which means I get both access via wifi and the USB hardwire (comes up as an unidentified network). After many hours messing with it and finding I could get access if I disabled Avast until reboot, I found that stuffed Avast and I could not access it after the disable. Also I was finding Firefox was not shutting correctly and having to reboot to access either.
This was fixed (well it seems to be for now) by simply not switching on the dongle until the netbook and Avast were fully booted.
That still leaves the question of why Avast does this and if it should indeed do so at all!!!