We are running Exchange 2003 SP2 and Outlook 2003 SP3. Today is June 25, 2008. When trying to schedule meetings we can only see the availability of users up to August 1, 2008. After that date the availability lines turn to \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\. I checked the OWA to see if it was a cache mode issue with the clients but it shows the same thing. I checked the Schedule + Free Busy folder properties within the ESM and the server is listed on the replication tab. Is there a way to extend the viewable free busy data? Could this be related to the fact that not all clients are up to SP3 on their Outlook?