kde 4 hotkeys in intrepid

[Jimmy Stewpot]

Hello,

I have recently updated my kubuntu install to include the 4.1.3 packages 
  from Updates. Since installing these packages my hotkeys no longer 
work. for example I have the view desktop grid set as CTRL + TAB and its 
shown in the hotkeys as being set but when I attempt to use it nothing 
happens. The only hotkey that appears to work is to view the dashboard. 
Has anyone else had similar problems?

Regards,

Jimmy