My PC has been unusable for now 4 days because of Avast. Avastsvc.exe process is using more than 50% of CPU and makes my PC incredibly slow (opening a window takes more than 15 seconds). I spent (and loose) hours on the web looking for a solution to fix the problem. I found dozens of complains about this problem, but no fix which works.
It’s incredible that a company like Avast, first, distributes a release which has obviously not been tested correctly, second, is unable to fix the problem or at least to give a solution on its forum.
I will now install Ad-Aware from Lavasoft, which is free and seems to be much more efficient than Avast.
Good Bye.
What os/sp?
What exact version of avast?
Do you have/had any other security software installed?
Do you have NG enabled?