a couple of times my 3650 stops responding when i try to get beck to the standby mode from the message folder or the Call log menu. Although the phone works but the those apllication does not despond for some time. I even try closing them by pressing 'c' key , but no help . After sometime error appears "application closed ..... " Is something serious with my phone .?

do u have version 2.41 (press *#0000#)? i do. i get that alot before but now i don't. *shrugs*