We attempted to move the SQL database to a new server using the information in this document:
Novell Doc: ZENworks 10 Configuration Management System Administration Reference - Configuring the ZENworks Server to Point to the New MS SQL Database Containing Data Moved from Another MS SQL Database
This doc has some erroneous info in it, but no problems really...

Afterwards, I wasn't able to log in on a client (the certificate was incorrect or so it suggested). I coldn't find any particular problems, so I decided that there was an issue with the user source.

I attempted to delete the user source.This failed.
Error: The object called mydomain.com could not be deleted because it does not exist.
11 Jan 2010 09:19:44

Exception Info:
11 Jan 2010 09:19:44 Class....... com.novell.zenworks.datamodel.exceptions.ObjectNot FoundException
11 Jan 2010 09:19:44 Message..... 5ee016333d4e20133173e91f79a220d2
11 Jan 2010 09:19:44 Logged at... UserSourceStatusAJA..62

The user source now has a red X next to it, which if I hover over says:
Communication with the LDAP directory failed. Please check that the directory is online and accesible and that the connection information is correct.

If I try to get the details page of this user source:
Error: Attempt to forward user to object details page failed.: 5ee016333d4e20133173e91f79a220d2
See the ZENworks Control Center log file (zcc.log) for the full stack trace.

10 Jan 2010 22:16:28
Exception Info:
10 Jan 2010 22:16:28 Class....... com.novell.zenworks.datamodel.exceptions.ObjectNot FoundException
10 Jan 2010 22:16:28 Message..... 5ee016333d4e20133173e91f79a220d2
10 Jan 2010 22:16:28 Logged at... UserSourceStatusAJA..62
10 Jan 2010 22:16:28 ============== Exception (end) =============================
10 Jan 2010 22:16:33 MessageUtil..........85 :Error: Attempt to forward user to object details page failed.

It wont let me add another user source.
The wizard cannot continue for the following reason(s):
Unable to complete your request for the following reason: A user source already exists for the specified directory.

Any ideas on how to cleanup this AD issue?