Zdenal, by "everything" do you mean, in addition to M'bytes, the problems of frozen/hung computer, inability to access sites, inability to shut down computer correctly. I have been struggling with this for a week now, following suggestions on Avast thread which have not helped. I have now turned off MB Web Protection but do not like orange admonition. I was ready to disable Avast RealSite Protection but will wait to hear from other users - unless my computer continues to freeze up every ten minutes. It was also suggested to uninstall the Avast "do not disturb" module. What do users think?
dcollins: your wife should forgive you - this is a noble cause.
Please continue to follow up and keep us informed. This is quite an awful problem.