KDE 4.5.1: Can't exit KDE with keyboard anymore (with Lancelot)

[Diederik de Haas <didi.debian@cknow.org>]

Hello,

Tonight I upgraded to KDE 4.5.1 and now I can't logout/shutdown/etc with the keyboard anymore.
Through Alt+F5 I bring up the Lancelot menu and then with Alt+L I get the Leave menu popup 
containing Logout/Reboot/Shutdown/SuspendToDisk/SuspendToRam options, which I could previously 
navigate with the array keys or the shortcut key (Alt+S for Shutdown). 
That doesn't work anymore and Alt+S now types 's' in the search function of the Lancelot menu.
The only way to invoke Shutdown is to use my mouse for that final stage.

Regards,
  Diederik