Bump**
We are also experiencing this on random computers from time to time. Newly installed computers aswell as older ones.
We have tried Simons fix and it seems that it works on some computers. But our techs tells me it does not work on all computers.
It's a hassle to troubleshoot since it is a intermittent problem.
I know there is a big update of KAV coming up. But has anyone found a permanent solution on this besides disabling Anti-Spy?
And is it verified that it is the moduel Anti-spy causing this?