Anyone had problems with OS 4.5 (specifically, on an 8830 connected to Exchange via BES) not displaying calendar reminders? When a calendar reminder event occurs, the device does the appropriate profiles action (e.g., vibrates and plays the sound effect I have set for calendar reminders), and I get the calendar icon in the top bar. However, when I unlock the BB, I don't have the pop-up for the reminder displayed and the calendar icon in the top bar immediately disappears. However, when I get another E-mail or some other action occurs, the calendar icon again shows up in the top bar, but then immediately goes away again when I unlock the handset. So it's kind of like it's half being dismissed when the device is unlocked.

Any suggestions on how to fix this would be greatly appreciated.

I'm having the same issue. If you figure it out, I'd love to hear how to fix this.

Found this on Crackberry and it fixed it for me. I also took the battery out for a few minutes after following the instructions.

forums.crackberry.com/f52/today-theme-calendar-not-displaying-upcoming-44246/