Howdy, has anyone else experienced problems with the trackpad on a Powerbook G4 12"? The arrow stays in the corner, as if it were magnetized, and quickly jumps back to the corner if you try and move it. The only way to get it to return to normal is to shut down the machine and restart. Plugging a standard mouse into the usb seems to work, but a real pain in the arse as it's on the left side. Thank you.