Application: kontact (4.4.7)
KDE Platform Version: 4.4.5 (KDE 4.4.5)
Qt Version: 4.6.3
Operating System: Linux 2.6.35.2 i686
Distribution: Debian GNU/Linux 6.0 (squeeze)

-- Information about the crash:
I was writing an email when kmail crashed.

From the stacktrace the problem seems to come from the background spelling check

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#6  0xaeb65516 in mkallcap(char*, cs_info const*) () from /usr/lib/libhunspell-1.2.so.0
#7  0xaeb75c9f in SuggestMgr::ngsuggest(char**, char*, int, HashMgr**, int) () from /usr/lib/libhunspell-1.2.so.0
#8  0xaeb6fe7e in Hunspell::suggest(char***, char const*) () from /usr/lib/libhunspell-1.2.so.0
#9  0xaec868ac in MySpellChecker::suggestWord(char const*, unsigned int, unsigned int*) () from /usr/lib/enchant/libenchant_myspell.so
#10 0xaec86a54 in ?? () from /usr/lib/enchant/libenchant_myspell.so
#11 0xaec6759e in enchant_dict_suggest () from /usr/lib/libenchant.so.1
#12 0xaec8f533 in QSpellEnchantDict::suggest (this=0xc7c4618, word=...) at ../../../../sonnet/plugins/enchant/enchantdict.cpp:63
#13 0xb708b069 in Sonnet::Speller::suggest (this=0xaef10f0, word=...) at ../../kdecore/sonnet/speller.cpp:126
#14 0xb73e3ee3 in Sonnet::Highlighter::suggestionsForWord (this=0x9b39558, word=..., max=10) at ../../kdeui/sonnet/highlighter.cpp:431
#15 0xb748ea32 in KTextEdit::contextMenuEvent (this=0xaeadb18, event=0xbfef5a1c) at ../../kdeui/widgets/ktextedit.cpp:624
#16 0xb63c4f08 in QWidget::event (this=0xaeadb18, event=0xbfef5a1c) at kernel/qwidget.cpp:8211
#17 0xb67be8d3 in QFrame::event (this=0xaeadb18, e=0xbfef5a1c) at widgets/qframe.cpp:557
#18 0xb6859092 in QAbstractScrollArea::viewportEvent (this=0x0, e=0x13b) at widgets/qabstractscrollarea.cpp:1036
#19 0xb685ba65 in viewportEvent (this=0xb7d0370, o=0xaeadf20, e=0xbfef5a1c) at widgets/qabstractscrollarea_p.h:100
#20 QAbstractScrollAreaFilter::eventFilter (this=0xb7d0370, o=0xaeadf20, e=0xbfef5a1c) at widgets/qabstractscrollarea_p.h:116
#21 0xb6e1d76a in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x915efb8, receiver=0xaeadf20, event=0xbfef5a1c) at kernel/qcoreapplication.cpp:841
#22 0xb63665a9 in QApplicationPrivate::notify_helper (this=0x915efb8, receiver=0xaeadf20, e=0xbfef5a1c) at kernel/qapplication.cpp:4298
#23 0xb636d570 in QApplication::notify (this=0xbfef61d4, receiver=0xaeadf20, e=0xbfef5a1c) at kernel/qapplication.cpp:3946
#24 0xb736dbfa in KApplication::notify (this=0xbfef61d4, receiver=0xaeadf20, event=0xbfef5a1c) at ../../kdeui/kernel/kapplication.cpp:302
#25 0xb6e1e4cb in QCoreApplication::notifyInternal (this=0xbfef61d4, receiver=0xaeadf20, event=0xbfef5a1c) at kernel/qcoreapplication.cpp:726
#26 0xb63fd88e in QCoreApplication::sendSpontaneousEvent (receiver=0xaeadf20, event=0x13b) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#27 0xb63f7db2 in QETWidget::translateMouseEvent (this=0xa0514e0, event=0xbfef5e40) at kernel/qapplication_x11.cpp:4385
#28 0xb63f7253 in QApplication::x11ProcessEvent (this=0xbfef61d4, event=0xbfef5e40) at kernel/qapplication_x11.cpp:3391
#29 0xb6425372 in x11EventSourceDispatch (s=0x9162578, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#30 0xb42ba305 in g_main_dispatch (context=0x916a200) at /build/buildd-glib2.0_2.24.2-1-i386-AScyie/glib2.0-2.24.2/glib/gmain.c:1960
#31 IA__g_main_context_dispatch (context=0x916a200) at /build/buildd-glib2.0_2.24.2-1-i386-AScyie/glib2.0-2.24.2/glib/gmain.c:2513
#32 0xb42bdfe8 in g_main_context_iterate (context=0x916a200, block=<value optimized out>, dispatch=1, self=0x9168a38) at /build/buildd-glib2.0_2.24.2-1-i386-AScyie/glib2.0-2.24.2/glib/gmain.c:2591
#33 0xb42be1c8 in IA__g_main_context_iteration (context=0x916a200, may_block=1) at /build/buildd-glib2.0_2.24.2-1-i386-AScyie/glib2.0-2.24.2/glib/gmain.c:2654
#34 0xb6e4a075 in QEventDispatcherGlib::processEvents (this=0x91398c8, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#35 0xb6424ed5 in QGuiEventDispatcherGlib::processEvents (this=0x91398c8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#36 0xb6e1cae9 in QEventLoop::processEvents (this=0xbfef6134, flags=) at kernel/qeventloop.cpp:149
#37 0xb6e1cf3a in QEventLoop::exec (this=0xbfef6134, flags=...) at kernel/qeventloop.cpp:201
#38 0xb6e2216f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1003
#39 0xb6366667 in QApplication::exec () at kernel/qapplication.cpp:3581
#40 0x0804b472 in main (argc=1, argv=0xbfef63f4) at ../../../kontact/src/main.cpp:224

Reported using DrKonqi