Now in day 6th of owning my Desire and I found in the last couple of days when I've taken it out of the pouch that it has turned itself off. Where I would normally press the on/off button to wake it up from the black screen, it instead vibrates and goes thru the motion of starting back up as if its been turned off and asking me for my SIM PIN. I usually press the on/off button once to put it to "sleep" mode before putting it in the pouch. sometimes i don't even do that and just put it in the pouch and after leaving it on the bench for a while when I go back to it I have to turn it back on. So I know the on/off button hasn't accidently been pushed. The battery is also medium to full charged when this happens so its not a low batt issue. anyone else experience this problem?