Version:            (using KDE 4.3.4)
OS:                Linux
Installed from:    Ubuntu Packages

Hello,

here are the steps to reproduce the crash. the
crash happens for me all the time.

you need a kontact with a configured pop3 account
with passwords stored in kwallet.

1. start kontact and click on the "check mail" button
2. when the kde wallet service dialog appears click on cancel.
3. next the simple pop 3 autorization dialog is to appear. ignore
   the dialog, but do not close it.
4. select the contact mail window and quit the application
    via File -> Quit
5. then you get the conatct crash handler with the stacktrace
   below.

Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  0x00007f501f20b500 in __GI__IO_file_jumps () from /lib/libc.so.6
#6  0x00007f500ab6313c in ?? () from /usr/lib/libkmailprivate.so.4
#7  0x00007f500acb190e in ?? () from /usr/lib/libkmailprivate.so.4
#8  0x00007f500abea6dc in KMail::AccountManager::processNextCheck(bool) () from /usr/lib/libkmailprivate.so.4
#9  0x00007f500abeb062 in KMail::AccountManager::singleCheckMail(KMAccount*, bool) () from /usr/lib/libkmailprivate.so.4
#10 0x00007f500abeb479 in KMail::AccountManager::checkMail(bool) () from /usr/lib/libkmailprivate.so.4
#11 0x00007f500ada75fd in KMMainWidget::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#12 0x00007f501f67bddc in QMetaObject::activate (sender=0x219b780, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=0x53f70) at kernel/qobject.cpp:3113
#13 0x00007f501ff850a7 in QAction::triggered (this=0x1c447b0, _t1=false) at .moc/release-shared/moc_qaction.cpp:236
#14 0x00007f501ff864ef in QAction::activate (this=0x219b780, event=<value optimized out>) at kernel/qaction.cpp:1160
#15 0x00007f50202effea in QAbstractButtonPrivate::click (this=0x2273150) at widgets/qabstractbutton.cpp:525
#16 0x00007f50202f0275 in QAbstractButton::mouseReleaseEvent (this=0x22713d0, e=0x7ffff3f512a0) at widgets/qabstractbutton.cpp:1115
#17 0x00007f50203becba in QToolButton::mouseReleaseEvent (this=0x1c447b0, e=0x0) at widgets/qtoolbutton.cpp:709
#18 0x00007f501ffd99c0 in QWidget::event (this=0x22713d0, event=0x7ffff3f512a0) at kernel/qwidget.cpp:7549
#19 0x00007f501ff8aefc in QApplicationPrivate::notify_helper (this=0x16ddaf0, receiver=0x22713d0, e=0x7ffff3f512a0) at kernel/qapplication.cpp:4056
#20 0x00007f501ff92011 in QApplication::notify (this=<value optimized out>, receiver=0x22713d0, e=0x7ffff3f512a0) at kernel/qapplication.cpp:3758
#21 0x00007f5020bc1e56 in KApplication::notify (this=0x7ffff3f531c0, receiver=0x22713d0, event=0x7ffff3f512a0) at ../../kdeui/kernel/kapplication.cpp:302
#22 0x00007f501f666c2c in QCoreApplication::notifyInternal (this=0x7ffff3f531c0, receiver=0x22713d0, event=0x7ffff3f512a0) at kernel/qcoreapplication.cpp:610
#23 0x00007f501ff918e0 in QCoreApplication::sendSpontaneousEvent (receiver=0x22713d0, event=0x7ffff3f512a0, alienWidget=0x22713d0, nativeWidget=0x17ee260, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#24 QApplicationPrivate::sendMouseEvent (receiver=0x22713d0, event=0x7ffff3f512a0, alienWidget=0x22713d0, nativeWidget=0x17ee260, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>) at kernel/qapplication.cpp:2924
#25 0x00007f501fff7a0e in QETWidget::translateMouseEvent (this=0x17ee260, event=<value optimized out>) at kernel/qapplication_x11.cpp:4409
#26 0x00007f501fff6aa9 in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7ffff3f52dd0) at kernel/qapplication_x11.cpp:3550
#27 0x00007f502001fd0c in x11EventSourceDispatch (s=<value optimized out>, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#28 0x00007f5018ee0bce in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#29 0x00007f5018ee4598 in ?? () from /lib/libglib-2.0.so.0
#30 0x00007f5018ee46c0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#31 0x00007f501f68f1a6 in QEventDispatcherGlib::processEvents (this=0x16a6cb0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#32 0x00007f502001f4be in QGuiEventDispatcherGlib::processEvents (this=0x1c447b0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#33 0x00007f501f665532 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#34 0x00007f501f665904 in QEventLoop::exec (this=0x7ffff3f53100, flags=) at kernel/qeventloop.cpp:201
#35 0x00007f501f667ab9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#36 0x0000000000403f47 in _start ()