Please try the following: in Explorer, go to the folder <avast>\setup\inf, right-click the file aswMonFlt.inf and choose "Install".
Then restart the machine. Does that solve the problem?
Vlk, is this a Vista option or can it also be used with XP, win2k, NT or is it only specific to this particular problem ?
I ask because (I haven't seen this option in the forums previously) when the other FAQ options have been tried and failed, plus the usual culprits another AV, etc. have been ruled out, could this be as an option of last restore ?