There was an earlier thread on this which was ended when the problem was "solved".
Unfortuntaely this problem continues for me. Particularly I get the false intrusion alert when entering/or leaving www.engadget.com . I also note than some others I have checked with can safely enter and leave this site, unlike me....
I have have run all latest MS updates and I have now run NAV's LiveUpdate about 6x in the last 24 hours. But nothing clears this issues for me.