Comment 1 for bug 346907

I found out that it is possible to shut down using the keyboard (assumes that you know alt-f1, but that's the same for the old method):
- Press Alt-F1 to open the main menu
- Using the arrow keys, navigate to the keyboard shortcut preferences
- Press enter
- Use the down/up keys to search for the entry "Move between panels and the desktop, using a popup window"
- See that it's Ctrl-Alt-Tab, press that until the top panel is focused.
- You want to go right, so press the right cursor key some times.
- Find out that this only iterates the menus, think of throwing your computer out of the window or a killing spree or something.
- Press escape and again Ctrl-Alt-Tab, try it with tab this time.
- Be happy that it works, press it a several times.
- Note that suddenly none of the items seems to be selected (before, they used to get a orange background one after the other)
- Press tab again, note that now the menu is selected again
- Assume that you had selected the user switcher applet before, press Ctrl-Tab.
- Press enter
Congratulations, you can now shut down your computer!

Proposed Solution:
Add that quit stuff back to the system menu. The panel thing may remain of course, users who don't like it will remove it anyway.