Improved Quit Dialog

[Dana Olson]

I don't know if it has been discussed before, but the icon on the Quit
Dialog for the Lock Screen option feels out of place. If a padlock was
drawn up in the same style as the other 5 icons, I think it would
improve the dialog a lot. I would make a mockup, but I don't have the
talent required to create graphics like that.

It's not a big deal, just looking at the dialog makes made me think of
it.. The pic is here, for reference:
http://www.ubuntu.com/testing/dapperrc?action=AttachFile&do=get&target=quit.png

(I had not noticed this before, as I was using the Tango icon theme.)

If this has already been discussed and decided against, then ignore
me. Or feel free to point me to that discussion.