I'm on a late 2009 i7 2.8Ghz iMac, OSX 10.6.8, Magic Mouse (also Mighty Mouse). All updates installed. Today, randomly in the middle of the day, while using my computer, I lost the ability to use the right click on my Magic Mouse. I also tried the wired Mighty Mouse - same result, no right click BUT it is not a total loss - it is selective. For example, I have the right-click on the desktop, in iTunes, in other programs. But I don't have it if I try to right-click on a folder inside Finder, or any files in a folder, doesn't matter what the file is: jpg, epub, flv, whatever. Now, like I said, if I open Finder and try to right click on any folder, I can't. BUT I can right-click on folders that are on the desktop!!! So, since I wanted color labels on some folders, what I have to do is drag them from finder onto the desktop and there I get my right-click back and now I can color code them. Here is what I have done so far: 1)repaired permissions 2)restarted the computer 3)repaired permissions again 4)tried to switch off Magic Mouse, then switch on 5)tried my wired Mighty Mouse 6)gone into Settings menu for Magic Mouse and toggled on and off the Secondary Click from Right to Left and back again. No joy. I still don't have my right click in bizarre ways. HELP!!!!!