I'm having a problem with my N78. The right selection key, end call key, C key and menu keys all stop working every couple of days. Switching the phone off and on doesn't solve the problem, however these keys will work for approx. 10 seconds after the phone is turned on before they stop working again.
The only way to get the phone working again is to do a factory reset (*#7780#) and then the phone works ok again for a day or 2 before the buttons stop working again. Obviously this isn't an ideal solution as i have to set the phone up again every time (WEP keys etc.)
Has anybody got any suggestions as to what could be wrong and what I might do to fix the problem permenantly?