Approximately a year ago, users in my organization were able to change the default folder view in Windows Explorer on their Windows XP computers at their leisure. Approximately 3 months ago the Domain Controller Crashed and had to be rebuilt. The Domain Controller is a Windows 2008 Standard Server. Since the Domain Controller was rebuilt, users are able to select a different folder view and use that folder view until the workstation is rebooted which makes me think it is a policy.
I have reviewed the group policies and there are no policies enabled that would cause this.
There is a policy to set the default folder view to icons instead of thumbnails which is not configured, and in the fine print applies to Vista clients. The client computers are Windows XP.