Saleco

Since you were so sparse with your details I had to Google what you did give us:

[b]OAB - Oxfordshire Association for the Blind

OAB - Over-Active Bladder

OAB - Ordem dos Advogados do Brasil

OAB - Ohio Association of Broadcasters

OAB - OAB Content at ZDNet UK

OAB - One to All Broadcast

OAB - Oklahoma Association of Broadcaster

OAB - Offline Address Book[/b]

[i]Perhaps you could be kind enough to point out which one you are referring to and perhaps elaborate slightly with some more details.[/i] ;)

Offline Address Book Errors

Read more here:
http://www.amset.info/exchange/oab-error.asp

http://support.microsoft.com/kb/823580

http://www.people.cornell.edu/pages/drb1/outlook2007/oab_2007.html

http://support.microsoft.com/kb/841273

Please post back if you have any more problems or questions.
If this information is useful, please mark as helpful. Thanks.