Magic Mouse right click lost every day My Magic Mouse at work looses right-click functionality every day, although System Preferences says it's enabled. I usually leave the computer at the "Login window" before leaving, and authenticate again to resume the session the next day. When I do that, right-clicking doesn't work anymore. I have to turn the mouse off and back on again to re-enable right-click functionality. I'm running OSX 10.7.5, but the problem is present at least since I upgraded from Snow Leopard to Lion (an year ago, maybe?).

I've googled this issue several times, and many other people have similar complaints, but I couldn't find a permanent fix. Does anyone know how to solve that? It's driving me crazy!



I tried replacing the mouse, but the problem persists. So, I think the actual cause must be one of the following:


A problem with my iMac's bluetooth hardware
A bug on the Magic Mouse's firmware software
An on OSX bug
I just talked to German Apple telephone support. They fixed the problem for me! With fresh  installs of 10.7.5 the problem is that two files are missing that are needed for the mouse. In my case I could get them from another computer I own that ran Lion and did have the files. To get to the files you need do this: 

Go to
/System/Library/LoginPlugins/BezelServices.loginPlugin

control-click that file and choose "show contents"
now in the finder window navigate to 
Contents/PlugIns/

In this folder should be two files named
AppleBluetoothHIDMouse.plist
and
AppleHIDMouse.plist

If you don't find these files, you need to get them and put them in.