Application that crashed: kmail
Version of the application: 1.12.1
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.30.5-43.fc11.x86_64 x86_64
Distribution: "Fedora release 11 (Leonidas)"

What I was doing when the application crashed:
while using autocompletion in a new mail Kmail crashed.

 -- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fa45f96c820 (LWP 9845))]

Thread 2 (Thread 0x7fa44d901910 (LWP 10159)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x000000380665adfb in QWaitConditionPrivate::wait (time=<value optimized out>, this=<value optimized out>) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (time=<value optimized out>, this=<value optimized out>) at thread/qwaitcondition_unix.cpp:159
#3  0x00000038080818e4 in QHostInfoAgent::run (this=0x33d5c50) at kernel/qhostinfo.cpp:260
#4  0x0000003806659d45 in QThreadPrivate::start (arg=0x33d5c50) at thread/qthread_unix.cpp:188
#5  0x00000037fce0686a in start_thread (arg=<value optimized out>) at pthread_create.c:297
#6  0x00000037fc2de3bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fa45f96c820 (LWP 9845)):
[KCrash Handler]
#5  QListWidgetItem::text (this=<value optimized out>) at /usr/include/QtGui/qlistwidget.h:90
#6  KPIM::AddresseeLineEdit::slotLDAPSearchData (this=<value optimized out>) at /usr/src/debug/kdepim-4.3.1/libkdepim/addresseelineedit.cpp:820
#7  0x00007fa460fb3c59 in KPIM::AddresseeLineEdit::qt_metacall (this=0x29bd9d0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffc0c10dd0)
    at /usr/src/debug/kdepim-4.3.1/x86_64-redhat-linux-gnu/libkdepim/addresseelineedit.moc:95
#8  0x00007fa461651618 in KMLineEdit::qt_metacall (this=0x29b9060, _c=43749472, _id=26150272, _a=0x2) at /usr/src/debug/kdepim-4.3.1/x86_64-redhat-linux-gnu/kmail/kmlineeditspell.moc:68
#9  0x00007fa4616bfe98 in RecipientLineEdit::qt_metacall (this=0x29b9060, _c=43749472, _id=26150272, _a=0x2) at /usr/src/debug/kdepim-4.3.1/x86_64-redhat-linux-gnu/kmail/recipientseditor.moc:123
#10 0x00000038067547dc in QMetaObject::activate (sender=0x3931440, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x2) at kernel/qobject.cpp:3113
#11 0x00007fa460fb6805 in KPIM::LdapSearch::searchData (this=0x29b9060, _t1=<value optimized out>) at /usr/src/debug/kdepim-4.3.1/x86_64-redhat-linux-gnu/libkdepim/ldapclient.moc:205
#12 0x00007fa460fba201 in KPIM::LdapSearch::slotDataTimer (this=0x3931440) at /usr/src/debug/kdepim-4.3.1/libkdepim/ldapclient.cpp:465
#13 0x00007fa460fba275 in KPIM::LdapSearch::finish (this=0x3931440) at /usr/src/debug/kdepim-4.3.1/libkdepim/ldapclient.cpp:472
#14 0x00007fa460fbcdcc in KPIM::LdapSearch::qt_metacall (this=0x3931440, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffc0c10f00)
    at /usr/src/debug/kdepim-4.3.1/x86_64-redhat-linux-gnu/libkdepim/ldapclient.moc:184
#15 0x00000038067547dc in QMetaObject::activate (sender=0x3932030, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x2) at kernel/qobject.cpp:3113
#16 0x00007fa460fb6f11 in KPIM::LdapClient::slotDone (this=0x3932030) at /usr/src/debug/kdepim-4.3.1/libkdepim/ldapclient.cpp:119
#17 0x00007fa460fba6d8 in KPIM::LdapClient::qt_metacall (this=0x3932030, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffc0c110b0)
    at /usr/src/debug/kdepim-4.3.1/x86_64-redhat-linux-gnu/libkdepim/ldapclient.moc:92
#18 0x00000038067547dc in QMetaObject::activate (sender=0x2410330, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x2) at kernel/qobject.cpp:3113
#19 0x00000038098ee872 in KJob::result (this=0x29b9060, _t1=0x2410330) at /usr/src/debug/kdelibs-4.3.1/x86_64-redhat-linux-gnu/kdecore/kjob.moc:188
#20 0x00000038098eec0f in KJob::emitResult (this=0x2410330) at /usr/src/debug/kdelibs-4.3.1/kdecore/jobs/kjob.cpp:304
#21 0x000000380c2edc93 in KIO::SimpleJob::slotFinished (this=0x2410330) at /usr/src/debug/kdelibs-4.3.1/kio/kio/job.cpp:477
#22 0x000000380c2ee153 in KIO::TransferJob::slotFinished (this=0x2410330) at /usr/src/debug/kdelibs-4.3.1/kio/kio/job.cpp:948
#23 0x000000380c2eca71 in KIO::TransferJob::qt_metacall (this=0x2410330, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffc0c114d0)
    at /usr/src/debug/kdelibs-4.3.1/x86_64-redhat-linux-gnu/kio/jobclasses.moc:343
#24 0x00000038067547dc in QMetaObject::activate (sender=0x3311770, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x2) at kernel/qobject.cpp:3113
#25 0x000000380c3b00d1 in KIO::SlaveInterface::dispatch (this=0x3311770, _cmd=104, rawdata=@0x7fffc0c11720) at /usr/src/debug/kdelibs-4.3.1/kio/kio/slaveinterface.cpp:175
#26 0x000000380c3ac9b3 in KIO::SlaveInterface::dispatch (this=0x3311770) at /usr/src/debug/kdelibs-4.3.1/kio/kio/slaveinterface.cpp:91
#27 0x000000380c39f7ed in KIO::Slave::gotInput (this=0x3311770) at /usr/src/debug/kdelibs-4.3.1/kio/kio/slave.cpp:322
#28 0x000000380c3a18fc in KIO::Slave::qt_metacall (this=0x3311770, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffc0c11890)
    at /usr/src/debug/kdelibs-4.3.1/x86_64-redhat-linux-gnu/kio/slave.moc:76
#29 0x00000038067547dc in QMetaObject::activate (sender=0x28a63c0, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x2) at kernel/qobject.cpp:3113
#30 0x000000380c2baf57 in KIO::ConnectionPrivate::dequeue (this=0x28ae320) at /usr/src/debug/kdelibs-4.3.1/kio/kio/connection.cpp:82
#31 0x000000380c2bb06d in KIO::Connection::qt_metacall (this=0x28a63c0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x2aba100)
    at /usr/src/debug/kdelibs-4.3.1/x86_64-redhat-linux-gnu/kio/connection.moc:73
#32 0x000000380674eb51 in QObject::event (this=0x28a63c0, e=0x2ea8c40) at kernel/qobject.cpp:1111
#33 0x0000003808d8f69c in QApplicationPrivate::notify_helper (this=0x137a200, receiver=0x28a63c0, e=0x2ea8c40) at kernel/qapplication.cpp:4056
#34 0x0000003808d968fe in QApplication::notify (this=0x7fffc0c12340, receiver=0x28a63c0, e=0x2ea8c40) at kernel/qapplication.cpp:4021
#35 0x000000380ac11b56 in KApplication::notify (this=0x7fffc0c12340, receiver=0x28a63c0, event=0x2ea8c40) at /usr/src/debug/kdelibs-4.3.1/kdeui/kernel/kapplication.cpp:302
#36 0x000000380673f59c in QCoreApplication::notifyInternal (this=0x7fffc0c12340, receiver=0x28a63c0, event=0x2ea8c40) at kernel/qcoreapplication.cpp:610
#37 0x00000038067401a2 in QCoreApplication::sendEvent (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.h:213
#38 QCoreApplicationPrivate::sendPostedEvents (event=<value optimized out>, receiver=<value optimized out>) at kernel/qcoreapplication.cpp:1247
#39 0x0000003806767cc3 in QCoreApplication::sendPostedEvents () at kernel/qcoreapplication.h:218
#40 postEventSourceDispatch () at kernel/qeventdispatcher_glib.cpp:210
#41 0x00000037ff23790e in g_main_dispatch (context=<value optimized out>) at gmain.c:1824
#42 IA__g_main_context_dispatch (context=<value optimized out>) at gmain.c:2377
#43 0x00000037ff23b0e8 in g_main_context_iterate (context=0x1376920, block=<value optimized out>, dispatch=<value optimized out>, self=<value optimized out>) at gmain.c:2455
#44 0x00000037ff23b20a in IA__g_main_context_iteration (context=0x1376920, may_block=1) at gmain.c:2518
#45 0x0000003806767936 in QEventDispatcherGlib::processEvents (this=0x1340750, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#46 0x0000003808e21f8e in QGuiEventDispatcherGlib::processEvents (this=0x29b9060, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#47 0x000000380673ded2 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 36}) at kernel/qeventloop.cpp:149
#48 0x000000380673e2a4 in QEventLoop::exec (this=0x7fffc0c12190, flags={i = 0}) at kernel/qeventloop.cpp:201
#49 0x0000003806740439 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#50 0x0000000000402e69 in main (argc=<value optimized out>, argv=<value optimized out>) at /usr/src/debug/kdepim-4.3.1/kmail/main.cpp:146

Reported using DrKonqi