Hi, In preparation of the KDE 4.2.0 release, we have released Akonadi 1.1.0 now. So, to be clear: KDE 4.1.x must use Akonadi 1.0.x ( 0 for now ) KDE 4.2.x (incl. release candidates) must use Akonadi 1.1.x ( 0 for now ) Download it from: http://download.akonadi-project.org/ Best, Toma