I've only had the laptop for about 2 months, when the left trackpad button started getting mushy from overuse. The button clips to a metal rod underneath at two places, and I think one of the clips is worn out. Because you can't just replace the plastic button, I got an entire replacement palm rest under warranty.
This is great for anyone who wanted to add a fingerprint reader to their T60. If you don't use the trackpad, great! If you do, you can easily replace the left button with the one from your palm rest. You just have to unscrew the 4 screws that secures the trackpad to the palm rest. I have instructions here.
ASKING $100 or best offer. The cheapest I found online was $150. PayPal only (checking only, I can't accept credit card payments).
T60 Palm Rest with Fingerprint reader:







