We had a problem with our CCM 4.13 sr3 cluster last week where no one could log into the attendant console (users would get an invalid username or password error). It ended up being a problem with the AC user's password. After resetting the password in the global directory (I have no idea how it got changed) users were able to log in again however any new users I try to create are not able to login. They still get the invalid username and password error. If I change the password for an existing user, that user can not login with the new password but can with the old password so clearly changes are not being processed by the system. I've tried restarting the CTI and TCD services on all servers with no luck. There are no errors in the event viewer. If I look at the CCN,user_profiles section of DC Directory Admin I can see that the new users are not being added.
I have a case open but TAC doesn't seem to be getting anywhere so I'm wondering if anyone has had a similar problem.