Great app, but currently unusable

From a feature point of view, this is a great app, but since last fall, I and others have been afflicted with a CalendarAgent bug that causes Mail and Calendars to hang when Cobook is running. Ive been forced to revert to the Apple Contacts app. If Apple or Cobook come up with a fix, Ill happily switch back, but in the meantime I cannot use Cobook, nor can I recommend it.

Robster0663 about Cobook, v1.2.2