New battery for MBP Late 2008
1 - 2 minutes
Trackpad wasn't working right so replaced an old, swelling battery with a new battery
Simple! Took the old battery out and replaced with new one. Good to go again!
If you have an older Macbook Pro and notice the trackpad behaving strangely, could be time for a new battery. The battery swells after awhile and presses against the trackpad making it harder to function correctly. This is a common fix for the problem.