A note regarding the calendar question earlier:

I spoke with our engineers and this is actually an issue with Blackberrys. They will automatically
accept any ICS (Outlook style) invitations that are sent to them. With the calendar sync system you
have set up, the Blackberry issue can cause issues by adding the event even if you didn’t mean to.
This is a known Blackberry issue, but I do not think that they have plans fix this in the near future.

I hope this helps and if you have any further questions just let me know.
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