So I had the same problem on my 2006 macbook, also running 10.6.8.I was convinced it was a software problem until I read a post somewhere that said it could be an old battery that has expanded and is putting pressure on the trackpad.So I took out the battery,made sure the power supply was plugged in an booted up...bingo, problem solved.I then left my battery in a freezer for a while to make any swelling go down and when I put it back, all working fine for now.So I might have to keep doing this if the problem comes back again :)
Propresenter For Mac Os X 10.6.8
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