New local profile gets created with .domain extension at random times on random W2k pc's

Some of our users are getting new profiles created when they log in to the domain, and of course they don't see the desktop they're used to, etc.  These are local profiles, not roaming.

Our users all log in using our domain name in the login screen (user;password;domain).  Their existing profiles are shown in Documents and Settings as 'username' and the new profile being created is 'username.domain' (so even though they've been logging into the domain for months, the profile being used does not have the .domain extension)  .  The existing profile has been in use for a long time, but on random days and random pc's, a new profile gets created.

It seems all of the effected pc's are Windows 2000 pro sp4.  Our original domain controller is Windows 2000 sp4, and we added a second DC running Windows 2003 sp1 in January.  Everything seems to be running fine from the DC standpoint - dcdiag shows no errors.  The login script seems to run properly, as all their mapped drives appear.

Re-creating the users old profile is getting annoying.

What is causing the second profile to be created and how do we stop this behavior?

 
si-supportAsked:
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PberSolutions ArchitectCommented:
This is usually caused by permissions being changed.  The user should have full control to his/her folder in documents and settings.

You can revert to the old profile by making user the user has full control throughout the profile and re-pointing the registry.

See this:
http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Windows/2000/Q_21933678.html

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si-supportAuthor Commented:
Pber -

The user's permissions on the pc or network have not changed from the day before when they logged in fine.  They log out and log back in every day.  They haven't changed their password. The permissions on the new folder are the same as on the old folder.

Thanks for the tip on getting back the profile, but we don't need help getting back to the original profile settings - after a half dozen of these it's down pat.
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PberSolutions ArchitectCommented:
There could be corruption as well.  Windows has a nasty problem with this.  I'm not sure why only 2000 machines.  Have you looked into UPHClean, it might help:

http://www.microsoft.com/downloads/details.aspx?FamilyID=1B286E6D-8912-4E18-B570-42470E2F3582&displaylang=en
http://searchwinit.techtarget.com/tip/0,289483,sid1_gci960409,00.html
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si-supportAuthor Commented:
Thanks pber.  I'll try using that tool.  Do I install it at the DC or do I need to push to all of our w2k pc's?
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PberSolutions ArchitectCommented:
It installs on the target PC's.  Try it on one problem PC first and see if it occurs again before you deploy it to all.  We have deployed that to all of our machines.  It pretty much fixed up any profile corruption problems we had.
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si-supportAuthor Commented:
I tried using the tool on one of the problem pc's and, unfortunately, that didn't help.  We wound up rebuilding the drive.  After having a flurry of issues, we haven't had a profile corruption for awhile now.
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Windows Server 2003

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