I own a little PDA from Palm called the m100. Lately whenever I change the batteries it erases all of my data. I have to reload everything and this is a pain in the ass. My theory is that there is a backup battery inside and it is dead. I had had this PDA for 16-17 months when this began happening. I cannot open the unit as I do not have a Torx driver. Can onyone give me any information as to how to fix this? Other than this issue it works perfectly and I see no reason to shell out $100+ for a new one.