Command-Alt-Space shortcut to open new Finder window stopped working
Hi,
I bought my first MAC some months ago. I read somewhere that by default, the Command-Alt-Space shortcut opens a new finder window, and I've been using it with no problem for a couple of months. But yesterday the shortcut suddenly stopped opening a new Finder window, and started opening a Spotlight window instead. (??)
I checked the keyboard shortcuts and in fact the Command-Alt-Space shortcut was assigned to open a Spotlight window. Weird, because I didn't change it and noone else uses this compuer. I pressed "Restore defaults", to see if that could revert the change, but it didn't—now the Command-Alt-Space shortcut was not assigned to anything, and the Spotlight window allegedly default shortcut turned out to be Ctrl-Alt-Space.
So my questions are:
Why was I able to use the Command-Alt-Space shortcut to open new Finder window, and now I'm not?
How can I make it work again? It was really much more practical than going to Finder and pressing Cmd-N...
Thank you.
MacBook Pro (Retina, Mid 2012), OS X Mountain Lion (10.8.2)