my wifes old PDA went on the blitz and so my cousing sent me an extra IPAQ 4155 he had lying around.... we completley reset (hard reset) the whole drive to start from scratch... we haven't installed any programs at all yet but i'm running into this problem: the on/off button sometimes causes the pda to freeze... if i'm using the pda for anything (solitaire, address book, calculator, anything) - i have to wait 20 seconds after the last thing i do - or the on/off button causes the whole thing to freeze and i have to soft reset. i've updated the pocket pc version, cleaned the battery terminals, hard reset a few times, but still no dice... it doesn't act sluggish at all, but just freezes all of a sudden while trying to turn it off... any suggestions?