Application that crashed: kontact
Version of the application: 4.3.1
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-15-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
due to week Wi-Fi Kmail lost connection to IMAP server and displayed a message reporting so. Once OK button was clicked - Kmail crashed.

It does  not happen all the time however. My Kmail is checking e-mail every 5 minutes and it looses connection ton the IMAP serer some 5 to 7 times a day. What makes it crash sometimes and not the other times, unfortunately, I can not tell.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  KIO::Slave::deref (this=0x37a5a20) at /build/buildd/kde4libs-4.3.1/kio/kio/slave.cpp:242
#6  0x00007f638cf3ef6f in KIO::Slave::gotInput (this=0x37a5a20) at /build/buildd/kde4libs-4.3.1/kio/kio/slave.cpp:335
#7  0x00007f638cf411c8 in KIO::Slave::qt_metacall (this=0x37a5a20, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x7fff984e8ed0) at /build/buildd/kde4libs-4.3.1/obj-x86_64-linux-gnu/kio/slave.moc:76
#8  0x00007f638aa3cea2 in QMetaObject::activate (sender=0x37a5b10, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x2595d80) at kernel/qobject.cpp:3113
#9  0x00007f638ce5bdb1 in KIO::ConnectionPrivate::dequeue (this=0x37a6130) at /build/buildd/kde4libs-4.3.1/kio/kio/connection.cpp:82
#10 0x00007f638ce5c20a in KIO::Connection::qt_metacall (this=0x37a5b10, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x38cc170)
    at /build/buildd/kde4libs-4.3.1/obj-x86_64-linux-gnu/kio/connection.moc:73
#11 0x00007f638aa375d8 in QObject::event (this=0x37a5b10, e=0x390a730) at kernel/qobject.cpp:1111
#12 0x00007f638b5a7f4d in QApplicationPrivate::notify_helper (this=0x22ba980, receiver=0x37a5b10, e=0x390a730) at kernel/qapplication.cpp:4056
#13 0x00007f638b5b018a in QApplication::notify (this=0x7fff984eb6f0, receiver=0x37a5b10, e=0x390a730) at kernel/qapplication.cpp:4021
#14 0x00007f638c9acdeb in KApplication::notify (this=0x7fff984eb6f0, receiver=0x37a5b10, event=0x390a730) at /build/buildd/kde4libs-4.3.1/kdeui/kernel/kapplication.cpp:302
#15 0x00007f638aa276ac in QCoreApplication::notifyInternal (this=0x7fff984eb6f0, receiver=0x37a5b10, event=0x390a730) at kernel/qcoreapplication.cpp:610
#16 0x00007f638aa2831a in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x227a850) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#17 0x00007f638aa50e03 in postEventSourceDispatch (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#18 0x00007f638417820a in IA__g_main_context_dispatch (context=0x22a4920) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1814
#19 0x00007f638417b8e0 in g_main_context_iterate (context=0x22a4920, block=1, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2448
#20 0x00007f638417ba7c in IA__g_main_context_iteration (context=0x22a4920, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#21 0x00007f638aa50a8f in QEventDispatcherGlib::processEvents (this=0x227a0a0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#22 0x00007f638b640bdf in QGuiEventDispatcherGlib::processEvents (this=0x20, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#23 0x00007f638aa25f42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -1739679664}) at kernel/qeventloop.cpp:149
#24 0x00007f638aa26314 in QEventLoop::exec (this=0x7fff984e9890, flags={i = -1739679568}) at kernel/qeventloop.cpp:201
#25 0x00007f638ba3ee3e in QDialog::exec (this=0x38604f0) at dialogs/qdialog.cpp:498
#26 0x00007f638c932862 in KMessageBox::createKMessageBox (dialog=0x38604f0, icon=<value optimized out>, text=@0x7fff984ea200, strlist=@0x7fff984e9fe0, ask=@0x7fff984e9ee0, 
    checkboxReturn=0x7fff984e9f5f, options={i = -1739678176}, details=@0x7fff984e9ed0, notifyType=QMessageBox::Information) at /build/buildd/kde4libs-4.3.1/kdeui/dialogs/kmessagebox.cpp:331
#27 0x00007f638c9339f7 in KMessageBox::createKMessageBox (dialog=0x38604f0, icon=QMessageBox::Information, text=@0x7fff984ea200, strlist=@0x7fff984e9fe0, ask=@0x7fff984e9ee0, 
    checkboxReturn=0x7fff984e9f5f, options={i = -1739677904}, details=@0x7fff984e9ed0) at /build/buildd/kde4libs-4.3.1/kdeui/dialogs/kmessagebox.cpp:151
#28 0x00007f638c935fa7 in KMessageBox::informationListWId (parent_id=0, text=@0x7fff984ea200, strlist=@0x7fff984e9fe0, caption=@0x7fff984ea1c0, dontShowAgainName=@0x7fff984ea190, options=
      {i = -1739677792}) at /build/buildd/kde4libs-4.3.1/kdeui/dialogs/kmessagebox.cpp:1008
#29 0x00007f638c936103 in KMessageBox::informationList (parent=0x0, text=@0x7fff984ea200, strlist=@0x7fff984e9fe0, caption=@0x7fff984ea1c0, dontShowAgainName=@0x7fff984ea190, 
    options=<value optimized out>) at /build/buildd/kde4libs-4.3.1/kdeui/dialogs/kmessagebox.cpp:977
#30 0x00007f638c936151 in KMessageBox::information (parent=0x20, text=@0x7f6389eff590, caption=<value optimized out>, dontShowAgainName=<value optimized out>, options=<value optimized out>)
    at /build/buildd/kde4libs-4.3.1/kdeui/dialogs/kmessagebox.cpp:964
#31 0x00007f6377318553 in KMail::ImapAccountBase::handleError (this=0x28e7710, errorCode=<value optimized out>, errorMsg=@0x7fff984ea350, job=0x3775750, context=@0x7fff984ea430, 
    abortSync=<value optimized out>) at /build/buildd/kdepim-4.3.1/kmail/imapaccountbase.cpp:1047
#32 0x00007f63773101c2 in KMail::ImapAccountBase::handleJobError (this=0x28e7710, job=0x3775750, context=@0x7fff984ea430, abortSync=false) at /build/buildd/kdepim-4.3.1/kmail/imapaccountbase.cpp:374
#33 0x00007f6377314c5f in KMail::ImapAccountBase::slotSimpleResult (this=0x28e7710, job=0x3775750) at /build/buildd/kdepim-4.3.1/kmail/imapaccountbase.cpp:928
#34 0x00007f6377319162 in KMail::ImapAccountBase::qt_metacall (this=0x28e7710, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff984ea5d0)
    at /build/buildd/kdepim-4.3.1/obj-x86_64-linux-gnu/kmail/imapaccountbase.moc:138
#35 0x00007f63773216d5 in KMAcctCachedImap::qt_metacall (this=0x20, _c=2314204560, _id=59811696, _a=0x2595d80) at /build/buildd/kdepim-4.3.1/obj-x86_64-linux-gnu/kmail/kmacctcachedimap.moc:78
#36 0x00007f638aa3cea2 in QMetaObject::activate (sender=0x3775750, from_signal_index=<value optimized out>, to_signal_index=7, argv=0x2595d80) at kernel/qobject.cpp:3113
#37 0x00007f638b07b942 in KJob::result (this=0x20, _t1=0x3775750) at /build/buildd/kde4libs-4.3.1/obj-x86_64-linux-gnu/kdecore/kjob.moc:188
#38 0x00007f638b07bcbf in KJob::emitResult (this=0x3775750) at /build/buildd/kde4libs-4.3.1/kdecore/jobs/kjob.cpp:304
#39 0x00007f638ce93210 in KIO::SimpleJob::slotFinished (this=0x3775750) at /build/buildd/kde4libs-4.3.1/kio/kio/job.cpp:477
#40 0x00007f638ce8e0a7 in KIO::SimpleJob::slotError (this=0x3775750, err=<value optimized out>, errorText=@0x7fff984eaad0) at /build/buildd/kde4libs-4.3.1/kio/kio/job.cpp:489
#41 0x00007f638ce8e2a2 in KIO::SimpleJob::qt_metacall (this=0x3775750, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff984ea890)
    at /build/buildd/kde4libs-4.3.1/obj-x86_64-linux-gnu/kio/jobclasses.moc:158
#42 0x00007f638aa3cea2 in QMetaObject::activate (sender=0x273f5f0, from_signal_index=<value optimized out>, to_signal_index=6, argv=0x2595d80) at kernel/qobject.cpp:3113
#43 0x00007f638cf4c0e6 in KIO::SlaveInterface::error (this=0x20, _t1=149, _t2=<value optimized out>) at /build/buildd/kde4libs-4.3.1/obj-x86_64-linux-gnu/kio/slaveinterface.moc:153
#44 0x00007f638cf4f989 in KIO::SlaveInterface::dispatch (this=0x273f5f0, _cmd=102, rawdata=<value optimized out>) at /build/buildd/kde4libs-4.3.1/kio/kio/slaveinterface.cpp:208
#45 0x00007f638cf4c3e2 in KIO::SlaveInterface::dispatch (this=0x273f5f0) at /build/buildd/kde4libs-4.3.1/kio/kio/slaveinterface.cpp:91
#46 0x00007f638cf3ef63 in KIO::Slave::gotInput (this=0x273f5f0) at /build/buildd/kde4libs-4.3.1/kio/kio/slave.cpp:322
#47 0x00007f638cf411c8 in KIO::Slave::qt_metacall (this=0x273f5f0, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x7fff984eac90) at /build/buildd/kde4libs-4.3.1/obj-x86_64-linux-gnu/kio/slave.moc:76
#48 0x00007f638aa3cea2 in QMetaObject::activate (sender=0x392f960, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x2595d80) at kernel/qobject.cpp:3113
#49 0x00007f638ce5bdb1 in KIO::ConnectionPrivate::dequeue (this=0x273f6f0) at /build/buildd/kde4libs-4.3.1/kio/kio/connection.cpp:82
#50 0x00007f638ce5c20a in KIO::Connection::qt_metacall (this=0x392f960, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x385a8b0)
    at /build/buildd/kde4libs-4.3.1/obj-x86_64-linux-gnu/kio/connection.moc:73
#51 0x00007f638aa375d8 in QObject::event (this=0x392f960, e=0x2932f10) at kernel/qobject.cpp:1111
#52 0x00007f638b5a7f4d in QApplicationPrivate::notify_helper (this=0x22ba980, receiver=0x392f960, e=0x2932f10) at kernel/qapplication.cpp:4056
#53 0x00007f638b5b018a in QApplication::notify (this=0x7fff984eb6f0, receiver=0x392f960, e=0x2932f10) at kernel/qapplication.cpp:4021
#54 0x00007f638c9acdeb in KApplication::notify (this=0x7fff984eb6f0, receiver=0x392f960, event=0x2932f10) at /build/buildd/kde4libs-4.3.1/kdeui/kernel/kapplication.cpp:302
#55 0x00007f638aa276ac in QCoreApplication::notifyInternal (this=0x7fff984eb6f0, receiver=0x392f960, event=0x2932f10) at kernel/qcoreapplication.cpp:610
#56 0x00007f638aa2831a in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x227a850) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#57 0x00007f638aa50e03 in postEventSourceDispatch (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#58 0x00007f638417820a in IA__g_main_context_dispatch (context=0x22a4920) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1814
#59 0x00007f638417b8e0 in g_main_context_iterate (context=0x22a4920, block=1, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2448
#60 0x00007f638417ba7c in IA__g_main_context_iteration (context=0x22a4920, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#61 0x00007f638aa50a8f in QEventDispatcherGlib::processEvents (this=0x227a0a0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#62 0x00007f638b640bdf in QGuiEventDispatcherGlib::processEvents (this=0x20, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#63 0x00007f638aa25f42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -1739672048}) at kernel/qeventloop.cpp:149
#64 0x00007f638aa26314 in QEventLoop::exec (this=0x7fff984eb650, flags={i = -1739671968}) at kernel/qeventloop.cpp:201
#65 0x00007f638aa285e4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#66 0x0000000000404945 in main (argc=1, argv=0x7fff984ebdd8) at /build/buildd/kdepim-4.3.1/kontact/src/main.cpp:218

This bug may be a duplicate of or related to bug 206673

Reported using DrKonqi