It's happened a number of times now.

I'm clearly hitting some key combination that closes word entirely. If I have 20 files open (to state the obvious), they're all closed.

I know how to recover them, but man, is it frustrating. Anyone know what that key combo is - so I can turn it off?

Thanks in advance!

UPD: Or: Is there anything else that would cause Word to shut down - all instances - just like that?