All of a sudden I find my calendar events older than 30 days except recurring events are now gone! Options under appointment is Keep Forever and I am on a BES. No Policy and all appointments are in Outlook? What happened?

It was not like this one month ago???

It sounds like a auto archiving rule was inadvertently created. You can check by going to the calender in Outlook, open a shared folder, and click on the auto archive tab. Your admin may have created a policy as well, but doubt it. Let us know if that is it.