Hi I have a macbook pro 15", primo 2011.
It runs perfect with Mavericks. However recently it has started to get a strange bug from time to time. Some times left clicks on the pad is not working. It happens randomly while I work. It's often happening when I e.g. want to close a window in finder or change/close a tab in safari.
The issue shows like this: When I for an example hover over the "X" and clicks to close the window, nothing happens. I can try 10 times but nothing works. Right clicking though always seems to work. I have noticed that if I move the pointer a little around (maybe clicking elsewhere) and then back on the "X" again, then it always works fine again.
The issue comes and goes, and I cannot find any pattern, except that it's happening for every 20. left click I'm doing, that the computer seems to not register it.
Best Answer
This happened to me as well, and I just realized that the problem might be because I swapped the hdd drive with other macbook and the when I installed osx the hdd it was in a different macbook, so probably after a reinstall would work.