When I run a boot time scan I get several kines that end error 42100. The scan seems to complete normally though. I wanted to be sure everything was ok have been having trouble with a persistent worm Trojano.
See http://forum.avast.com/index.php?board=2;action=display;threadid=7014
Is it your case too ?
disabled the noexecute flag and everything works fine.
I’m not sure what my case would do.