Physically clean the mouse, remove the battery and put it again and see if that helps. If you have to press the left click forcefully, there is a possibility of accumulation of dirt on the left mouse ...

Anyone with a Razer Orochi (or any Razer) have an issue where the double click is too sensitive in OS X? I've installed the newest drivers from Razer, but I can't seem to find any setting in the ...

Is this a laptop? Does the track pad exhibit the same behavior? It's possible both mice you tried are bad, at least that would be my guess. I saw an Apple discussion thread that mentioned "Logitech ...