Need to perform multiple clicks in MacBook Pro 2011 running OS X Lion
This is not a known but to my knowledge. Have you tried running a test OS from an external volume that has a fresh install of Lion (with all updates) to see if the issue still remains? Is your system able to run 10.6.8? If so try a known good volume with Snow Leopard and test again.
It might be of use to try those OSs out to help narrow it down. Best of luck.