I have a Blackjack I with WM6.0. Using the latest version of Active Sync I am able to sync email, contacts, tasks both up and down. However, Calendar events only sync up to the server and not down to the phone. During the sync, the counter showing the number of new calendar entries to be synced is correctly shown on my phone and it even counts off like it is working. No events though make it to the phone.
We are running MS Exchange 2003