Xseries :: Nokia X6-vibration Does Not Work On Incoming Message

i bought my mobile about a year ago. it was working pretty well.about 2-3 days ago, my phone stopped vibrating on an incoming message.It does vibrate during an incoming call.I have restored the factory settings,switched it on and off,took out the battery and put it back on, but nothing seems to work.Also, the normal message notification(the small envelope on the upper right corner) doesnt show up when i recieve a message. I tried to set it on general,so that it wud give the message tone on an incoming message,but it doesnt give the message tone as well.