Answer to: My mouse clicks when I rest my wrist next to the trackpad.The battery might be starting to swell. Make sure you're using the power adapter, remove the battery and see if the symptoms persist. You should also be able to see a slight swelling, causing the top or bottom of the battery to bow. If that's what's happening, the highest quality replacements are made by NuPower and FastMac. They're cheaper than the Apple batteries and last longer. For the MacBook models, there's not much practical difference between the batteries produced by the two companies.