Version:            (using KDE KDE 3.5.6)
Installed from:    Debian testing/unstable Packages

Didn't do anything special, but Kontact was open and in use for several hours before the crash. When closing, a SIGABRT error was signaled. Can't reproduce it.

Backtrace:
(no debugging symbols found)
Using host libthread_db library "/lib/libthread_db.so.1".
(...)
[Thread debugging using libthread_db enabled]
[New Thread 47190379327296 (LWP 21852)]
[New Thread 1107310912 (LWP 22092)]
[New Thread 1098918208 (LWP 22091)]
[New Thread 1090525504 (LWP 22090)]
[New Thread 1082132800 (LWP 22089)]
(...)
[KCrash handler]
#5  0x00002aeb584b0c45 in raise () from /lib/libc.so.6
#6  0x00002aeb584b25c0 in abort () from /lib/libc.so.6
#7  0x00002aeb584e8afb in ?? () from /lib/libc.so.6
#8  0x00002aeb584effb0 in ?? () from /lib/libc.so.6
#9  0x00002aeb584f36ec in free () from /lib/libc.so.6
#10 0x00002aeb590e4052 in QTimer::~QTimer () from /usr/lib/libqt-mt.so.3
#11 0x00002aeb590f809e in QWidget::~QWidget () from /usr/lib/libqt-mt.so.3
#12 0x00002aeb607984ba in KOAgendaView::~KOAgendaView ()
   from /usr/lib/libkorganizer.so.1
#13 0x00002aeb590f809e in QWidget::~QWidget () from /usr/lib/libqt-mt.so.3
#14 0x00002aeb5917a4a7 in QFrame::~QFrame () from /usr/lib/libqt-mt.so.3
#15 0x00002aeb5921bf31 in QWidgetStack::~QWidgetStack ()
   from /usr/lib/libqt-mt.so.3
#16 0x00002aeb590f809e in QWidget::~QWidget () from /usr/lib/libqt-mt.so.3
#17 0x00002aeb5917a4a7 in QFrame::~QFrame () from /usr/lib/libqt-mt.so.3
#18 0x00002aeb5944e6ab in QHBox::~QHBox () from /usr/lib/libqt-mt.so.3
#19 0x00002aeb5944e703 in QVBox::~QVBox () from /usr/lib/libqt-mt.so.3
#20 0x00002aeb590f809e in QWidget::~QWidget () from /usr/lib/libqt-mt.so.3
#21 0x00002aeb5917a4a7 in QFrame::~QFrame () from /usr/lib/libqt-mt.so.3
#22 0x00002aeb591f9cf7 in QSplitter::~QSplitter () from /usr/lib/libqt-mt.so.3
#23 0x00002aeb590f809e in QWidget::~QWidget () from /usr/lib/libqt-mt.so.3
#24 0x00002aeb6079031c in CalendarView::~CalendarView ()
   from /usr/lib/libkorganizer.so.1
#25 0x00002aeb607b8eb3 in ActionManager::~ActionManager ()
   from /usr/lib/libkorganizer.so.1
#26 0x00002aaaad388058 in KOrganizerPart::~KOrganizerPart ()
   from /usr/lib/kde3/libkorganizerpart.so
#27 0x000000000041d239 in ?? ()
#28 0x00002aeb590bd337 in QObject::event () from /usr/lib/libqt-mt.so.3
#29 0x00002aeb590f20c3 in QWidget::event () from /usr/lib/libqt-mt.so.3
#30 0x00002aeb591c38fa in QMainWindow::event () from /usr/lib/libqt-mt.so.3
#31 0x00002aeb5905926a in QApplication::internalNotify ()
   from /usr/lib/libqt-mt.so.3
#32 0x00002aeb5905bb23 in QApplication::notify () from /usr/lib/libqt-mt.so.3
#33 0x00002aeb58994cbe in KApplication::notify ()
   from /usr/lib/libkdecore.so.4
#34 0x00002aeb58fec802 in QApplication::sendEvent ()
   from /usr/lib/libqt-mt.so.3
#35 0x00002aeb5905a27d in QApplication::sendPostedEvents ()
   from /usr/lib/libqt-mt.so.3
#36 0x00002aeb590728f6 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#37 0x00002aeb590725ff in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#38 0x00002aeb5905ad48 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#39 0x000000000041ccc3 in ?? ()
#40 0x00002aeb5849d8e4 in __libc_start_main () from /lib/libc.so.6
#41 0x0000000000414c09 in ?? ()
#42 0x00007fff53d0b968 in ?? ()
#43 0x0000000000000000 in ?? ()