I've noticed that my trackpad has become quite unresponsive in its clicking, mostly on the left side. The further to the right side that I try to click the greater the click response becomes. After doing a bit of research I found that it could be a swelling battery, sounded crazy at first. -What are the dangers of just letting it go for now and not looking into it further? -Are there ways to confirm that my battery is swelling? -What causes the battery to swell and what can I do to prevent it? Maybe I should replace it to be safe? -Battery Cycles: 180 -Battery Age 2.6 years -Mid 2011 8,2 MBP 10.6SnwLpd Thanks guys.