Apparently, certain settings left over from NT System Policies (ntconfig.pol) conflict so badly with Group Policy settings that the 2 never decide who wins. I just wasted two hours trying to get screen saver settings to not conflict, when the 2 are setting things in different places and something in the OS can’t decide which one takes precedence.
I guess I get to migrate all our NTConfig.pol settings over to group policies tommorrow. I’ve been putting it off until we close, and that’s passed, but we’ve got a giant conference coming in tomorrow and I’d hate to break something. Oh well.
Update: Knowledgebase article 257939 has something to say about this phenomenon.