Version:           3.4.2 (using KDE KDE 3.4.2)
Installed from:    Fedora RPMs
OS:                Linux

Using a webdav:// calendar in KOrganizer is GREAT!  But seems to have gotten a lot more buggy / crash prone going from 3.3 -> 3.4.  Here's one that occurs for me very frequently on both my home and work computers (where I use webdav to share the same calendar).  It seems to happen when I click the KOrganizer icon in the system tray, and then click on an event and start editing it within in the first couple of seconds (i.e. it looks like it's still refreshing the calendar off the webdav server in the background).  Once the dialog is open I can leave it sitting there for minutes, doesn't matter, but almost without fail as soon as I submit any edits I get this crash.

[KCrash handler]
#3  0x00000037e0e5af95 in KOEventEditor::processInput ()
   from /usr/lib64/libkorganizer.so.1
#4  0x00000037e0e54f9b in KOIncidenceEditor::slotOk ()
   from /usr/lib64/libkorganizer.so.1
#5  0x00000037de438078 in KDialogBase::qt_invoke ()
   from /usr/lib64/libkdeui.so.4
#6  0x00000037e0e55198 in KOIncidenceEditor::qt_invoke ()
   from /usr/lib64/libkorganizer.so.1
#7  0x00000037e0e5b79f in KOEventEditor::qt_invoke ()
   from /usr/lib64/libkorganizer.so.1
#8  0x00000037dc252caa in QObject::activate_signal ()
   from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#9  0x00000037dc2530c2 in QObject::activate_signal ()
   from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#10 0x00000037dc28a4a7 in QWidget::event ()
   from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#11 0x00000037dc1f7cfa in QApplication::internalNotify ()
   from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#12 0x00000037dc1f8860 in QApplication::notify ()
   from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#13 0x00000037dcbf1d40 in KApplication::notify ()
   from /usr/lib64/libkdecore.so.4
#14 0x00000037dc1990a3 in QETWidget::translateMouseEvent ()
   from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#15 0x00000037dc197a6f in QApplication::x11ProcessEvent ()
   from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#16 0x00000037dc1a9a66 in QEventLoop::processEvents ()
   from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#17 0x00000037dc20dd8c in QEventLoop::enterLoop ()
   from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#18 0x00000037dc20dcb2 in QEventLoop::exec ()
   from /usr/lib64/qt-3.3/lib/libqt-mt.so.3
#19 0x000000000040a4c7 in ?? ()
#20 0x000000344101c4cc in __libc_start_main () from /lib64/libc.so.6
#21 0x000000000040a299 in ?? ()
#22 0x00007fffffd36b08 in ?? ()
#23 0x0000000000000000 in ?? ()