Hey maybe this 12.0.1 fix will help with Entourage and the sync issues we’ve been having. The readme certainly gives some hope:
Description of the Office 2008 for Mac 12.0.1 Update
Reliability is improved when synchronizing with a server that is running Microsoft Exchange Server.
This update improves synchronization support for users of Exchange accounts by [...]
Entourage 2008
May 3rd, 2008 · No Comments · Geek
Tags: Calendar Events·Consistency·Contact List·Entourage·Exchange Accounts·Hey·Instances·Isync·Itunes·Microsoft·Microsoft Exchange Server·Mobile Devices·Office Mac·Readme·Reliability·Server Stability·Sync Issues