DavidR
3
Did you also run the aswClear (uninstall utility) for the old version of avast5, if not you should to ensure all remnants of it are removed.
So boot into safe mode, run the uninstall utility for avast5 when complete run it again for avast6.
Before doing that you would obviously use add remove programs for a normal mode uninstall of the avast version currently installed…
What happened around Mar 21, any system changed updates to other security software ?
What other security software is installed ?
Aside from the question from Pondus about previous AV.