A family of Microsoft word processing software products for creating web, email, and print documents.
Jim, my first instincts were template corruption-- is that where the menu keystrokes are kept?
What's amazing to me is that in all the years and all the versions of Word I've used, I've never seen a re-assignment of keystrokes before! The re-assignment is consistent, too. They move down one menu item. And why it resets itself after a quit and restart is baffling, too.
Something in Word 2011 seems to make it more fragile--I've had more bizarre behavior and more crashes with it than with all other programs before on the Mac combined! And that's over three decades.
The only regularly occurring crashes with Word 2008 were replicably-related to pasting graphs or charts into the program from Excel! Fortunately, no keystrokes were reassigned. But I learned to be compulsive about saving, wearing out the Command-S key combo! :-)