Only thing that was different was Tiny Personal Firewall and AVG6, which I uninstalled before installing better Sygate Personal firewall and avast! 4 back. Can it be that AVG6 leaves something behind and avast! 4 does not like it?
Sorry, I didn't send an error report and now it is too late since avast! is working properly now.
And as I said in my first message, when I right clicked main avast icon and selected "Start avast! Antivirus" it begins memory test normally, but then crashed. Otherwise it seemed to work fine.
And now to some questions:
How much RAM avast! uses when comparing to other anti-virus programs?
How effective is real time scanning engine? Can I leave it on when playing games without worrying that avast! 4 slows my rig down?
And some problem reports:
I am not exactly sure if avast! 4 is the one to blame but... When I am playing games or using other applications in full screen mode, the game or application suddenly minimizes. This tends to happen when my system has been idle for some time. I have a hunch that this issue begun after installing one of the later avast! 4 main program updates.
Can the problem be VRDB generator? It is set to generate when system is idle, that is because I don't use screensavers.
Sometimes update feature does not seem to work, seems like avast! 4 is "busy" and cannot run the update feature. When manually trying to run update of course.