I have been using GPO to specify IE settings on my XP workstations (IE7) for many years and all has been fine. Just lately I try and make a change in the GPO (such as change the proxy address, or add a URL to favorites) and it simply is not applied to the computers. In GPMC the resultant policies for that macine and that user show the change ried on a test GPO to set 'Internet Explorer Maintenance policy processing' to always process the policy but no luck. I have also tried re-creating the GPO from scratch.
Any ideas? I don't remember changing anything in other GPO's that may effect it