Upgrade to 4.5 beta url=http://forum.avast.com/index.php?board=11;action=display;threadid=8044;start=0[/url] and see if the problem is solved, or wait till tomorrow and see if the the problem is solved when the update to 4.5 final has been taken place.

YES, if everything goes well. 4.5 final will be released tomorrow.