[Mediawiki-l] Login not working for one user. Stopped working yestserday.

[Russell, Elizabeth]

We have one user that was logged on fine yesterday morning, logged off,
and has not been able to login again since then.   We are authenticating
using the LDAP extension, to a Windows Active Directory setup.  
I can logon and logoff just fine, no problem.
User said he has not changed is NT password in several weeks.... his
logon works fine everywhere else.
 
When he attempts to logon to the wiki he gets the Invalid password
message.  In the past we've gotten this if you attempted to login and
you were not included in the proper groups, but nothing has changed in
the group listing and all appears okay there.  He has the same level of
group membership that I do... although I have sysop for the wiki and he
does not.  
 
I've looked at the tables in the database but don't see anything
off-kilter in his userid.
 
I've attempted to login myself with an invalid userid and I get the same
error message and URL that he is getting "Login error:  incorrect
password entered.  Please try again"  URL when the error message is
displayed is:
http://[wiki_hostname]/wiki-isproc/index.php?title=Special:Userlogin&act
ion=submitlogin&type=login&returnto=Main_Page   (not accessible from the
Internet).  
 
There are no new entries in error_log when this happens, and I don't see
anything odd in access_log either.  I had the user delete cookies and
history files this AM, but it did not change the symptoms at all.   Can
anyone point me in the irght direction on this?    Thanks, Beth Russell