Do you have any "HID-compliant mouse" devices under "Mice and other pointing devices"? Those are the only ones I have disabled in the past if memory serves me correctly. And perhaps you should try PEP v2 as Lyndel suggested. The latest isn't always the greatest. PEP v3 wasn't out very long prior to the Pronto line being closed. Personally I don't even care for PEP v2. It's PEP v1.1.20 for the win as far as I'm concerned, but to each his own.