Troubles/domain users->Power Users gr

Hello...

I'm trying to ad the domain users group (from the domain server) to the Power Users group on the Win 2k workstations. Some machines work and some don't. For both the machines that work and the ones that don't I receive the same error message:

"Processing the object Domain Users failed with the following Error: The specified domain either does not exist or could not be contacted."

When I get this message I selet ok and sometimes it adds the group properly and sometimes it doesn't.

Any Ideas?

Thanks