We run around 30 networked Desktop PC's from a Windows 2003 Server (mail server & file server). For the last 2 weeks, any changes to the Active Directory have not been "updated" on the local machines Global Address List. I have tried re-building the offline folder on the server, and then re-downloading the GAL to the desktop, but this does not fix the problem.
The examples of changes made to the AD are things like new email accounts, new contact groups, etc. The unusual thing is though that these changes are appearing on the server when you work on within the Exchange or Active Directory, but simply do not show up on User PC's or even the Outlook client on the file server itself!