Hello,
I configured kmail including akonadi resources a couple of days ago. At first, messages from all my accounts were delivered o.k. Now, all of a sudden, kmail does not deliver any more (POP3) messages. Looking at my definition of akonadi resources (under System Administration) I see their state as "Uebertragung von xxxxxxx wird vorbereitet (0 %)" (roughly translated: transferring messages from xxxxxxx is being prepared (0%). After spending a lot of time googling I am at a loss as to what to do. KDE is at level 4.10.5 under Linux Mint 15. Has anybody got an idea?:<

Does this persists across login / logout? What happens if you issue "akonadictl restart" from the command line?