QuickStart Menu Items won't change any more

[Marco Feuerstein]

It doesn't matter whether I change the settings in the 
Desktop/Panels/Menus/QuickStart Menu Items radio buttons.
My QuickStart Menu Items just don't change any more... there are always 
only 5 entries (changing the max. number of entries or changing from 
most recently used to most frequently used doesn't change the entries)
Does anyone one what I can do?
Thanks a lot
Marco