Word leaks
You know that winword crashes just when you would need it to work and too often eats your documents for breakfast.
But did you realize that it leaks as well? SCO found out the hard way when confidential information was found in the revisions data of a word document that was sent around (in SCO's case this might all be orchestrated towards stock-spinning FUD, but you get the idea).
The inmates are really running the asylum. Can't we go back and give everybody a simple editor which uses some kind of structured text or HTML as its native format?