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http://bugs.kde.org/show_bug.cgi?id=98792         




------- Additional Comments From tk CeBiTec Uni-Bielefeld DE  2006-08-18 14:46 -------
I'm observing this problem too (since KDE 3.4.1, IIRC), currently on Solaris 10 (Sparc), KDE 3.5.4, remote calendar via webdavs on an Apache 2.0.45, homedir via NFS.

My current observations are:

- The error does not show up for local calendars.
- The error seems to appear for me only when running Kontact. When Korganizer
  is invoked as a standalone application, the error does not appear (at least
  not during my admittedly limited testing period).
- I've done some tests with different settings of the "download interval" 
  property of the remote resource (currently set to 15min): not every download
  seems to produce the error message. Increasing the interval seems to reduce
  the frequency of the error.
- Probably related: I always get an "error while saving Shared Calendar" when
  trying to add a new event to the remote resource, although the event is
  stored correctly.

My guess is that for some reason two instances of the download processes/threads get in each other's way sometimes. Either the first one doesn't finish for some reason or doesn't clean up properly.

I've already started digging through the code but didn't find any possible causes so far...