More and more of our users are having difficulties setting up their Out Of Office. They receive an error stating "unable to save rules", and the temporary fix we have found to work is removing them from cache mode. I've found a couple of solutions here on this website, but none of them addressed this specific problem.
This doesn't involve public folders and the users in questions are not running out of mailbox size. We're running Exchange 2003 server with the lastest service pack, running on Windows 2000 Advanced Server SP4. The clients are running Windows XP SP2 and office 2003.