I've had an issue with KJots not responding at all in a Slackware64 -current installation (from an iso dated 21.08.2012).
I click 'New Book' in KJots and nothing happens. There are no books listed at all on opening and I can't seem to create one. This happens from within Kontact as well as opening KJots as a standalone.
Googling led me to a bug listed here
See the last post by Rod J.
Basically you need to open 'Akonadi Configuration' (this is in System Settings > Personal Information or type Akonadi in to the KDE Menu search box) click on 'Local Notes' and 'Modify' and you will see there is an extra '/' between share and notes. Delete this down to just one OK it and then restart Kontact or KJots and all should be well - you don't have to reboot the system, I'm sure he doesn't mean that anyway.
You should now have full functionality with 'Local Notes' and 'Notes' already listed as books.