Not having that problem on either of my 2 800's... I did recently learn however that if I don't have batteries in the unit - even if on the USB power - the clock memory appears to get lost (seems it only draws battery power for the clock)
Future PSR-900 user...(still hoping!)
PSR-800 x 2 | PSR-500
BCD-396T | BC-296D (voice) | BC-245XLT (mTrunker) | BC-600XLT | BC-IV | VX-8R
Not a Radio Shack fan.....