Version: (using KDE 4.4.0) OS: Linux Installed from: openSUSE RPMs I'm using the kmail resource to store my PIM data. After updating from KDE 4.3 to 4.4, I get the following problem: After I added a calendar event or task, the event is immediately synchronised as expected. However, KMAIL show in the status bar, that it (in random order) - Retrieves new messages - Checking annotation support - Removing deleted messages from server - Uploading messages to server and some other things for the Calendar or Task folder. And it repeats it on and on and on... After I recognized that Kontact gets very slow, I found out that a lot of empty mails (up to two thousand) were added to the Calendar or Task folder (121B, unknown sender/date and without the normal iCal.... subject) I removed al those empty mails via the web interface of my mail provider and refreshed the dimap cache. Kontact works fine until I add a new event..
After an update, the problem disappeared. So the bug can be closed. Sorry for the noise...