Nokia :: E72 No Tone / Vibration Upon Receiving SMS

My E72 suddenly does not vibrate or gives out a tone upon receiving a SMS.I checked the profile I used and the vibration and message tone were checked.I tried restoring the phone to factory settings but the problem still persist.Not sure where the problem lies though. When people call me, my phone does vibrate and the ring tone plays.but if I remember correctly, the notification light may or may not work at times when receiving an sms and the screen does not lit up upon receiving it too (if I'm correct, not sure now since I didn't notice when the problem occurs). This only applies when receiving SMSes.