[gary1435]

My Curve 8310 hangs on "Organizing Calendar" when trying to open the calendar. Have tried reboot and downloading new device software. Calendar opens to current day and time, but won't show messages for today or allow me to navigate to other dates. Have been unable to synch using Desktop Manager since it greys out DM icons when device is connected to laptop. Any suggestions are appreciated.

[tsac]

You did not say if your on a BES but if so the calendar may have a corrupted entry causing it to stall.
Try this to reset the data.

KB15139 - View Document