[Len Case]

This relates to some implementation issues and other bugs...

Basically, windows in the dock can be closed but not hidden (one by one that is--they will be hidden when the app is hidden). So we close the minimized windows but merely order out the others.

Right now there is an issue that switching workspaces does not stop movies (or flash) so if you start a movie and switch away, you can still hear it playing in the background.