Cached Open Directory Preferences?

We’re having some difficulty at work getting the brand new 2.4GHz MacBook Pros to take the “mobility” settings from our Open Directory. The OD is running on a G5 Xserve with Mac OS X 10.4.10 Server. All of the other preferences, disabled System Preference panes, requiring the password to wake from sleep/screen saver, etc. are all fine but since these computers are, in fact, portable and can be taken off the corporate network, they do need the mobile accounts.

I’ve deleted the /Library/Caches/ folder, the /Library/Managed Preferences/ folder as well as the /Library/Preferences/DirectoryService/ folder and then restarted, but for some reason the blocked System Preferences panes are still blocked. (Checking the settings in the Directory Access utility doesn’t show any options configured for LDAPv3 although the service is still checked “on”.) I would hope that if I can clear out all references to the Open Directory, recreating the settings from scratch might enable these new computers to get mobile accounts. Is there somewhere else the Open Directory configuration may be saved?