I'm using my Blackberry with a BES. Whenever I enter a calendar appointment from the Blackberry, I see the arrows showing me that the wireless sync is doing something, after which I get a duplicate entry in my calendar! Any ideas what setting I might have that could be causing this?

Thanks.

Check your BES server log for more details.

Check the cdo dll on your BES and make sure its running on the recommended version from Blackberry.