Since updating my computer to Mavericks all my commands have gone wonky.
My main key problem is my left command key. The right one works correctly with all the shortcuts I use, but the left one zooms out the screen and puts similar applications side by side.
I've tried a lot with System Preferences but since I am new to Mavericks it's hard to find what I am looking for.
Best Answer
Go to System Preferences > Mission Control and check the shortcut for Application windows. It must be set on the left ⌘ key (this must be the only OS X section that accepts single modifier keys).
Mission Control http://cdn.mactrast.com/wp-content/uploads/2013/10/Mission_Control-582x480.png