i got a problem with c5. suddenly it will lose call ringing and sms tone. it is not in silent mode.. the phone require reboot to fix this.. anyone got this same problem? how do u all fix it..

ya i already upgrade the firmware.. still the same..

yes.. it is in general mode and no ringing tone and sms tone alert.. u have the same problem? is it my firmware corruptted? i saw one guy complain in nokia web but no solution provided..