Repeat Request for Help   

Sorry for the repeat, but got nothing a few weeks back, figured I would try 
again:
Outlook clients, some with Office 2000, some Office 2003, both versions with 
current service packs applied.
When trying to check the Public Contacts, the server connection window 
(systray) shows an error. After a few moments, the users name will come up, 
with a place to enter the password. This can also happen if a send/receive 
window is initiated.
Nothing showing in the logs of note.
Any ideas?
Exch 2000 on a Compaq ProLiant M330, Windows 2000

date: Thu, 8 Jun 2006 07:54:59 -0400   author:   John ICS