Application: kmail (1.13.6)
KDE Platform Version: 4.6.3 (4.6.3)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-8-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:

I just removed both of my accounts that is use Kmail for. When I clicked "ok" to save my changes on the accounts window, Kmail tried searching for emails under those accounts (but of course I just deleted those accounts). It popped up a bunch of error messages stating it could no longer find various folders (ie. inbox, sent mail, trash, etc.), then crashed.

-- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f932dc9c840 (LWP 2517))]

Thread 3 (Thread 0x7f930f255700 (LWP 2520)):
#0  0x00007f932abf1f03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f9322af8104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9322af89f2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9319d29c44 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f9322b1f3e4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f93287aed8c in start_thread (arg=0x7f930f255700) at pthread_create.c:304
#6  0x00007f932abff04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f93036fb700 (LWP 2525)):
#0  0x00007f932abf1f03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f9322af8104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9322af8639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f932b54f446 in QEventDispatcherGlib::processEvents (this=0x2b66450, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f932b523882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f932b523abc in QEventLoop::exec (this=0x7f93036fad10, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f932b43a924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007f932b505c2f in QInotifyFileSystemWatcherEngine::run (this=0x2f75e00) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f932b43d175 in QThreadPrivate::start (arg=0x2f75e00) at thread/qthread_unix.cpp:320
#9  0x00007f93287aed8c in start_thread (arg=0x7f93036fb700) at pthread_create.c:304
#10 0x00007f932abff04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f932dc9c840 (LWP 2517)):
[KCrash Handler]
#6  operator KMFolder* (this=0x2b5ffd0) at /usr/include/qt4/QtCore/qpointer.h:78
#7  KMSystemTray::updateNewMessages (this=0x2b5ffd0) at ../../kmail/kmsystemtray.cpp:401
#8  0x00007f932c6e0d1c in KMSystemTray::qt_metacall (this=0x2b5ffd0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff5bfffe50) at ./kmsystemtray.moc:84
#9  0x00007f932b5395f8 in QMetaObject::activate (sender=0x2b62520, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3287
#10 0x00007f932b5381c9 in QObject::event (this=0x2b62520, e=<value optimized out>) at kernel/qobject.cpp:1190
#11 0x00007f932ba129e4 in QApplicationPrivate::notify_helper (this=0x2508960, receiver=0x2b62520, e=0x7fff5c000550) at kernel/qapplication.cpp:4462
#12 0x00007f932ba173aa in QApplication::notify (this=<value optimized out>, receiver=0x2b62520, e=0x7fff5c000550) at kernel/qapplication.cpp:4341
#13 0x00007f932d6bf196 in KApplication::notify (this=0x7fff5c003330, receiver=0x2b62520, event=0x7fff5c000550) at ../../kdeui/kernel/kapplication.cpp:311
#14 0x00007f932b52449c in QCoreApplication::notifyInternal (this=0x7fff5c003330, receiver=0x2b62520, event=0x7fff5c000550) at kernel/qcoreapplication.cpp:731
#15 0x00007f932b551f12 in sendEvent (this=0x2507580) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#16 QTimerInfoList::activateTimers (this=0x2507580) at kernel/qeventdispatcher_unix.cpp:604
#17 0x00007f932b54ecf4 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#18 0x00007f9322af7bcd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f9322af83a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f9322af8639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f932b54f3ef in QEventDispatcherGlib::processEvents (this=0x2477310, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#22 0x00007f932bab9dfe in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#23 0x00007f932b523882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#24 0x00007f932b523abc in QEventLoop::exec (this=0x7fff5c0007c0, flags=...) at kernel/qeventloop.cpp:201
#25 0x00007f932bed18e6 in QDialog::exec (this=0x2b30870) at dialogs/qdialog.cpp:552
#26 0x00007f932d62d77a in KMessageBox::createKMessageBox (dialog=0x2b30870, icon=<value optimized out>, text=..., strlist=<value optimized out>, ask=..., checkboxReturn=0x0, options=..., details=..., notifyType=QMessageBox::Warning) at ../../kdeui/dialogs/kmessagebox.cpp:337
#27 0x00007f932d62df8b in KMessageBox::createKMessageBox (dialog=0x2b30870, icon=QMessageBox::Warning, text=..., strlist=..., ask=..., checkboxReturn=0x0, options=..., details=...) at ../../kdeui/dialogs/kmessagebox.cpp:152
#28 0x00007f932d62e597 in KMessageBox::sorryWId (parent_id=0, text=..., caption=..., options=...) at ../../kdeui/dialogs/kmessagebox.cpp:921
#29 0x00007f932d62e6a6 in KMessageBox::sorry (parent=<value optimized out>, text=..., caption=..., options=<value optimized out>) at ../../kdeui/dialogs/kmessagebox.cpp:900
#30 0x00007f932c74fd1a in KMFolderMbox::open (this=0x2742de0, owner=<value optimized out>) at ../../kmail/kmfoldermbox.cpp:131
#31 0x00007f932c85c48f in KMMainWidget::openFolder (this=0x27853a0) at ../../kmail/kmmainwidget.cpp:2797
#32 0x00007f932c878728 in KMMainWidget::qt_metacall (this=0x27853a0, _c=QMetaObject::InvokeMetaMethod, _id=153, _a=0x7fff5c001120) at ./kmmainwidget.moc:509
#33 0x00007f932b5395f8 in QMetaObject::activate (sender=0x2742de0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff5c001120) at kernel/qobject.cpp:3287
#34 0x00007f932c6c5322 in FolderStorage::closed (this=<value optimized out>, _t1=0x2742ac0) at ./folderstorage.moc:191
#35 0x00007f932c6c660b in FolderStorage::remove (this=0x2742de0) at ../../kmail/folderstorage.cpp:803
#36 0x00007f932c75bd03 in KMFolderImap::remove (this=0x2742de0) at ../../kmail/kmfolderimap.cpp:234
#37 0x00007f932c6ea845 in KMFolderMgr::remove (this=0x271d740, aFolder=0x2742ac0) at ../../kmail/kmfoldermgr.cpp:354
#38 0x00007f932c6ea85b in KMFolderMgr::remove (this=0x271d740, aFolder=0x2732040) at ../../kmail/kmfoldermgr.cpp:350
#39 0x00007f932c7ac6cf in KMKernel::cleanupImapFolders (this=0x7fff5c0031c0) at ../../kmail/kmkernel.cpp:1609
#40 0x00007f932c61bea8 in AccountsPageReceivingTab::save (this=0x2fb7950) at ../../kmail/configuredialog.cpp:1068
#41 0x00007f932c62f381 in ConfigModuleWithTabs::save (this=0x2fb7c50) at ../../kmail/configuredialog_p.cpp:169
#42 0x00007f93239463e7 in KCModuleProxy::save (this=<value optimized out>) at ../../kutils/kcmoduleproxy.cpp:279
#43 0x00007f93239434f8 in KCMultiDialogPrivate::apply (this=<value optimized out>) at ../../kutils/kcmultidialog.cpp:300
#44 0x00007f9323943607 in KCMultiDialog::slotOkClicked (this=0x2de8a50) at ../../kutils/kcmultidialog.cpp:334
#45 0x00007f932c60ab89 in ConfigureDialog::slotOk (this=0x2de8a50) at ../../kmail/configuredialog.cpp:254
#46 0x00007f932c60ac1c in ConfigureDialog::qt_metacall (this=0x2de8a50, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=<value optimized out>) at ./configuredialog.moc:79
#47 0x00007f932b5395f8 in QMetaObject::activate (sender=0x2de8a50, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3287
#48 0x00007f932d61cad8 in KDialog::slotButtonClicked (this=0x2de8a50, button=4) at ../../kdeui/dialogs/kdialog.cpp:883
#49 0x00007f932d61cec2 in KDialog::qt_metacall (this=0x2de8a50, _c=QMetaObject::InvokeMetaMethod, _id=33, _a=0x7fff5c001a90) at ./kdialog.moc:190
#50 0x00007f932d6ed430 in KPageDialog::qt_metacall (this=0x2de8a50, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff5c001a90) at ./kpagedialog.moc:70
#51 0x00007f93239445c0 in KCMultiDialog::qt_metacall (this=0x2de8a50, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff5c001a90) at ./kcmultidialog.moc:86
#52 0x00007f932c60abd8 in ConfigureDialog::qt_metacall (this=0x2de8a50, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=<value optimized out>) at ./configuredialog.moc:72
#53 0x00007f932b5395f8 in QMetaObject::activate (sender=0x2f52e60, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff5c001a90) at kernel/qobject.cpp:3287
#54 0x00007f932b53d38e in QSignalMapper::mapped (this=<value optimized out>, _t1=4) at .moc/release-shared/moc_qsignalmapper.cpp:101
#55 0x00007f932b53d496 in QSignalMapper::map (this=0x2f52e60, sender=0x2f652b0) at kernel/qsignalmapper.cpp:266
#56 0x00007f932b53dba0 in QSignalMapper::qt_metacall (this=0x2f52e60, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0x7fff5c001be0) at .moc/release-shared/moc_qsignalmapper.cpp:87
#57 0x00007f932b5395f8 in QMetaObject::activate (sender=0x2f652b0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff5c001be0) at kernel/qobject.cpp:3287
#58 0x00007f932c088252 in QAbstractButton::clicked (this=<value optimized out>, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:206
#59 0x00007f932bdd183e in QAbstractButtonPrivate::emitClicked (this=0x2f86e20) at widgets/qabstractbutton.cpp:546
#60 0x00007f932bdd2dbb in QAbstractButtonPrivate::click (this=0x2f86e20) at widgets/qabstractbutton.cpp:539
#61 0x00007f932bdd302c in QAbstractButton::mouseReleaseEvent (this=0x2f652b0, e=0x7fff5c002520) at widgets/qabstractbutton.cpp:1121
#62 0x00007f932ba63cb8 in QWidget::event (this=0x2f652b0, event=0x7fff5c002520) at kernel/qwidget.cpp:8259
#63 0x00007f932ba129e4 in QApplicationPrivate::notify_helper (this=0x2508960, receiver=0x2f652b0, e=0x7fff5c002520) at kernel/qapplication.cpp:4462
#64 0x00007f932ba17db3 in QApplication::notify (this=<value optimized out>, receiver=0x2f652b0, e=0x7fff5c002520) at kernel/qapplication.cpp:4023
#65 0x00007f932d6bf196 in KApplication::notify (this=0x7fff5c003330, receiver=0x2f652b0, event=0x7fff5c002520) at ../../kdeui/kernel/kapplication.cpp:311
#66 0x00007f932b52449c in QCoreApplication::notifyInternal (this=0x7fff5c003330, receiver=0x2f652b0, event=0x7fff5c002520) at kernel/qcoreapplication.cpp:731
#67 0x00007f932ba13a0d in sendEvent (receiver=0x2f652b0, event=0x7fff5c002520, alienWidget=0x2f652b0, nativeWidget=0x2b2f770, buttonDown=0x7f932c4f3218, lastMouseReceiver=..., spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#68 QApplicationPrivate::sendMouseEvent (receiver=0x2f652b0, event=0x7fff5c002520, alienWidget=0x2f652b0, nativeWidget=0x2b2f770, buttonDown=0x7f932c4f3218, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3122
#69 0x00007f932ba93600 in QETWidget::translateMouseEvent (this=0x2b2f770, event=<value optimized out>) at kernel/qapplication_x11.cpp:4556
#70 0x00007f932ba9204a in QApplication::x11ProcessEvent (this=0x7fff5c003330, event=0x7fff5c002e70) at kernel/qapplication_x11.cpp:3678
#71 0x00007f932baba162 in x11EventSourceDispatch (s=0x2507640, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#72 0x00007f9322af7bcd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#73 0x00007f9322af83a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#74 0x00007f9322af8639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#75 0x00007f932b54f3ef in QEventDispatcherGlib::processEvents (this=0x2477310, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#76 0x00007f932bab9dfe in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#77 0x00007f932b523882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#78 0x00007f932b523abc in QEventLoop::exec (this=0x7fff5c003170, flags=...) at kernel/qeventloop.cpp:201
#79 0x00007f932b527ecb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#80 0x0000000000403175 in main (argc=<value optimized out>, argv=<value optimized out>) at ../../kmail/main.cpp:158

Reported using DrKonqi