Bug#464943: https://bugs.kde.org/show_bug.cgi?id=84589 has the fix

["Thomas K." <ees555@gmx.net>]

I can confirm that the "fix" mentioned at 
https://bugs.kde.org/show_bug.cgi?id=84589 worked for me.

That is removing ~/.kde/share/config/kresources/notes/stdrc and
restarting knotes/kontact.

I am not sure what really triggered the bug as this is a kde 3.5 install and I 
did not try to import notes from an older kde version. 

greetings, 
thomas