Application: kmail (1.13.5)
KDE Platform Version: 4.5.1 (KDE 4.5.1) "release 3"
Qt Version: 4.6.3
Operating System: Linux 2.6.34.7-0.3-desktop x86_64
Distribution: "openSUSE 11.3 (x86_64)"

-- Information about the crash:
Trying to lanch the app. After entering password, the app fail lo lanch properly an crash.

The crash can be reproduced every time.

-- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
[KCrash Handler]
#6  qobject_cast<QTreeModel*> (this=0xd468b0, item=0xbdb5e0, expand=false) at ../../src/corelib/kernel/qobject.h:455
#7  treeModel (this=0xd468b0, item=0xbdb5e0, expand=false) at ../../src/gui/itemviews/qtreewidget_p.h:222
#8  QTreeWidget::setItemExpanded (this=0xd468b0, item=0xbdb5e0, expand=false) at itemviews/qtreewidget.cpp:3132
#9  0x00007fc9b2bfe84b in setExpanded (this=0xa2a0d0) at /usr/include/QtGui/qtreewidget.h:409
#10 KMail::FolderView::restoreItemStates (this=0xa2a0d0) at /usr/src/debug/kdepim-4.4.6/kmail/folderview.cpp:389
#11 0x00007fc9b2bff217 in KMail::FolderView::reload (this=0xa2a0d0, openFoldersForUpdate=false) at /usr/src/debug/kdepim-4.4.6/kmail/folderview.cpp:671
#12 0x00007fc9b2e0d9c7 in KMMainWidget::readConfig (this=0xa712c0) at /usr/src/debug/kdepim-4.4.6/kmail/kmmainwidget.cpp:593
#13 0x00007fc9b2e1a6a8 in KMMainWidget::KMMainWidget (this=0xa712c0, parent=<value optimized out>, aGUIClient=0xa19b20, actionCollection=<value optimized out>, config=...)
    at /usr/src/debug/kdepim-4.4.6/kmail/kmmainwidget.cpp:232
#14 0x00007fc9b2bafac0 in KMMainWin::KMMainWin (this=0xa19ac0, __in_chrg=<value optimized out>, __vtt_parm=<value optimized out>) at /usr/src/debug/kdepim-4.4.6/kmail/kmmainwin.cpp:41
#15 0x00007fc9b2d51702 in KMKernel::openReader (this=0x7fffb578a340, onlyCheck=false) at /usr/src/debug/kdepim-4.4.6/kmail/kmkernel.cpp:422
#16 0x00007fc9b2d521c0 in KMKernel::action (this=0x7fffb578a340, mailto=<value optimized out>, check=false, to=..., cc=..., bcc=..., subj=..., body=..., messageFile=..., attachURLs=..., 
    customHeaders=...) at /usr/src/debug/kdepim-4.4.6/kmail/kmkernel.cpp:1939
#17 0x00007fc9b2d54a06 in KMKernel::handleCommandLine (this=0x7fffb578a340, noArgsOpensReader=true) at /usr/src/debug/kdepim-4.4.6/kmail/kmkernel.cpp:368
#18 0x00000000004027ea in KMailApplication::newInstance (this=0x7fffb578a4b0) at /usr/src/debug/kdepim-4.4.6/kmail/main.cpp:87
#19 0x00007fc9b3c49918 in ?? () from /usr/lib64/libkdeui.so.5
#20 0x00007fc9b3c49992 in ?? () from /usr/lib64/libkdeui.so.5
#21 0x00007fc9af4d7188 in ?? () from /usr/lib64/libQtDBus.so.4
#22 0x00007fc9af4d91ae in ?? () from /usr/lib64/libQtDBus.so.4
#23 0x00007fc9af4d9aae in ?? () from /usr/lib64/libQtDBus.so.4
#24 0x00007fc9af4d9cf8 in ?? () from /usr/lib64/libQtDBus.so.4
#25 0x00007fc9b176d509 in QObject::event(QEvent*) () from /usr/lib64/libQtCore.so.4
#26 0x00007fc9b1c35b0d in QApplication::event (this=0x7fffb578a4b0, e=0x9afac0) at kernel/qapplication.cpp:2355
#27 0x00007fc9b1c334d4 in QApplicationPrivate::notify_helper (this=0x6552c0, receiver=0x7fffb578a4b0, e=0x9afac0) at kernel/qapplication.cpp:4302
#28 0x00007fc9b1c3baca in QApplication::notify (this=<value optimized out>, receiver=0x7fffb578a4b0, e=0x9afac0) at kernel/qapplication.cpp:4185
#29 0x00007fc9b3b581e6 in KApplication::notify(QObject*, QEvent*) () from /usr/lib64/libkdeui.so.5
#30 0x00007fc9b175be4c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib64/libQtCore.so.4
#31 0x00007fc9b175f5ba in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib64/libQtCore.so.4
#32 0x00007fc9b1784173 in ?? () from /usr/lib64/libQtCore.so.4
#33 0x00007fc9a8cdca93 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#34 0x00007fc9a8cdd270 in ?? () from /usr/lib64/libglib-2.0.so.0
#35 0x00007fc9a8cdd510 in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#36 0x00007fc9b178467f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#37 0x00007fc9b1cd414e in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#38 0x00007fc9b175b292 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#39 0x00007fc9b175b495 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib64/libQtCore.so.4
#40 0x00007fc9b175f88b in QCoreApplication::exec() () from /usr/lib64/libQtCore.so.4
#41 0x00000000004033e8 in main (argc=<value optimized out>, argv=<value optimized out>) at /usr/src/debug/kdepim-4.4.6/kmail/main.cpp:156

Reported using DrKonqi