akonadi nepomuk feeder randomly stops. as a result address autocompletion in kmail doesn't work. after restarting the feeder autocompletion works again. (i have an owcloud carddav addressbook) Reproducible: Sometimes
also korganizer sometimes forgets the colors of my owncloud calendars, maybe it also belongs to the "crashes" of the nepomuk feeder.
The feeder has gotten a lot better for the 4.11 release. It no longer suspends itself when receiving large quantities of email and a number of other issues have been fixed. Please feel free to reopen this bug if you still encounter issues with 4.11