One of my users, quite frequently, gets duplicate calendars created in outlook from the use of his Z10, whilst out and about.
We aren't talking about meetings duplicating, it is a whole new fresh calendar with his email address on the left hand panel in outlook.
What this means to him, is he opens his calendar on the device and everything is blank.
What this means to me, the blackberry is now looking at this new blank calendar.
I have 30 users on BES5, and 40 on BES10, but he is the only one having the problem. I'm also very sure that it is something he is doing.
I have re-provisioned his device and the issue persists. He also had the issue on a couple old devices (before my time).
If you need any further info, please let me know.