In this screencast, Lilia shows a slick utility for troubleshooting group policy: gplogview. This utility lets you view all the events associated with a particular update of group policy. It's a great way to quickly filter and see just the changes that happened as part of an update. It's simple to get up and running and simple to operate. It's primarily used to export Group Policy related events from the system and operational logs into HTML and XML.
Download: Group Policy Log View