Gnome Keyboard Shortcuts

cf. http://www.novell.com/coolsolutions/tip/2289.html

General Shortcut Keys
A+F1 Applicantions Menu
A+F2 Run Application
PrScr screenshot
A+PrScr screenshot of the current window
C+A+Arrow switches between workspaces
C+A+D show desktop

Window Shortcut Keys
A+Tab switches between windows
A+Esc switches between windows in reverse order
F10 Opens the first menu
A+Space Opens the Window Menu .

Panel Shortcut Keys
C+A+Tab Switches the focus between the panels and the desktop
C+A+Esc Switches the focus between the panels and the desktop
C+F10 right-click popup menu (panel)
S+F10 right-click popup menu (panel object)

Others
C-A-L lock screen