Phone keeps reseting itself to random dates

[Guest welshgaz]

I'm having problems with my MDA Compact 3 randomly resetting itself. Sometimes it'll turn itself off totally, sometimes, it won't respond to any hard button presses and will not respond to any screen taps. Sometimes when I restart, the date will reset itself to November or September 2006. This is really starting to bug me now as this causing the alarm not to sound and wake me up! ;)

Any ideas anyone?

Welshgaz