Hi Part of the user account attributes are updating in Outlook 2010 (cached mode) but some aren't.
It's also possible that there's an issue with client-server communication such that OAB downloads aren't happening.
If you go to Tools -- Download Address Book, does it successfully update?
That will rule out a communications issue in receiving differential OAB updates. There's a lot of server-side info there that won't help you, but there are some client-side settings you can change to monitor & adjust Outlook's OAB-fetching behavior.
a)Download OAB and check b)Change GAL and test downloading OAB instantly c)Update OAB and check 2) Mode 0 – The Offline Address Book does not download automatically.
a) Test behavior once mode 0 is configured while old OAB files are still on the client b) Test behavior once mode 0 is configured while old OAB files are removed from client By default OAB is downloaded from server hosting Active mailbox database with Organizational mailbox.