Sorry, Those posts didn't help me.
When I look in the On-access protection control the installed providers are listed twice. One set is colored and the other is greyed out. The tooltip on the icon shows 3 of 14 providers are running.
If I look in the task manager under processes I have ashDisp.exe, ashlogv.exe, ashServ.exe, ashMaiSv.exe, ashWebSv.exe, and ashUpdSv.exe running.
When I look in the Avast4 program directory I do see that a system restore has renamed some files such as "aswScan.dll" and "aswScan(2).dll" and others, if that could mean anything.
Perhaps a fresh install would help?