Created attachment 57220 [details]
Screenshot of the blank window

Version:           1.13.5 (using KDE 4.5.1) 
OS:                Linux

After startup, KMail's window was almost entirely blank except for a rectangle in the top left (see attached screenshot). That appears to be all the widgets placed one on top of another, because when I right-click in that area, I see context menus for the folder view or the scrollbars. Menu shortcuts do not work, and closing the window with Alt-F4 crashed KMail and produced the following trace:


Application: KMail (kmail), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7716780 (LWP 1868))]

Thread 2 (Thread 0xb263ab70 (LWP 1979)):
#0  0x01eefe36 in clock_gettime (clock_id=32456692, tp=0xb2639f20) at ../sysdeps/unix/clock_gettime.c:100
#1  0x0090e50b in ?? () from /usr/lib/libQtCore.so.4
#2  0x009e56e5 in ?? () from /usr/lib/libQtCore.so.4
#3  0x009e572a in ?? () from /usr/lib/libQtCore.so.4
#4  0x009e37a8 in ?? () from /usr/lib/libQtCore.so.4
#5  0x009e383d in ?? () from /usr/lib/libQtCore.so.4
#6  0x01e38e6a in g_main_context_prepare () from /lib/libglib-2.0.so.0
#7  0x01e39279 in ?? () from /lib/libglib-2.0.so.0
#8  0x01e39848 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#9  0x009e359f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#10 0x009b3609 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#11 0x009b3a8a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#12 0x008afb7e in QThread::exec() () from /usr/lib/libQtCore.so.4
#13 0x0099235b in ?? () from /usr/lib/libQtCore.so.4
#14 0x008b2df9 in ?? () from /usr/lib/libQtCore.so.4
#15 0x00b45cc9 in start_thread (arg=0xb263ab70) at pthread_create.c:304
#16 0x05f1d69e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb7716780 (LWP 1868)):
[KCrash Handler]
#7  0x048ed874 in QTreeWidget::setItemExpanded(QTreeWidgetItem const*, bool) () from /usr/lib/libQtGui.so.4
#8  0x010d4d05 in KMail::FolderView::slotFolderExpanded(QTreeWidgetItem*) () from /usr/lib/libkmailprivate.so.4
#9  0x010e0577 in KMail::FolderView::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#10 0x010e589a in ?? () from /usr/lib/libkmailprivate.so.4
#11 0x009ba8ca in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#12 0x009cd6ad in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#13 0x048e6383 in QTreeWidget::itemExpanded(QTreeWidgetItem*) () from /usr/lib/libQtGui.so.4
#14 0x048e7e36 in ?? () from /usr/lib/libQtGui.so.4
#15 0x048ee3c1 in QTreeWidget::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libQtGui.so.4
#16 0x081f7cba in KPIM::TreeWidget::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkdepim.so.4
#17 0x08280fba in KPIM::FolderTreeWidget::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkdepim.so.4
#18 0x010e051a in KMail::FolderView::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#19 0x010e589a in ?? () from /usr/lib/libkmailprivate.so.4
#20 0x009ba8ca in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#21 0x009cd6ad in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#22 0x048a4943 in QTreeView::expanded(QModelIndex const&) () from /usr/lib/libQtGui.so.4
#23 0x048b6642 in QTreeView::expand(QModelIndex const&) () from /usr/lib/libQtGui.so.4
#24 0x048b716c in QTreeView::setExpanded(QModelIndex const&, bool) () from /usr/lib/libQtGui.so.4
#25 0x048ed8f2 in QTreeWidget::setItemExpanded(QTreeWidgetItem const*, bool) () from /usr/lib/libQtGui.so.4
#26 0x010d9073 in KMail::FolderView::restoreItemStates() () from /usr/lib/libkmailprivate.so.4
#27 0x010e023d in KMail::FolderView::reload(bool) () from /usr/lib/libkmailprivate.so.4
#28 0x01358e8b in KMMainWidget::readConfig() () from /usr/lib/libkmailprivate.so.4
#29 0x0136c4e1 in KMMainWidget::KMMainWidget(QWidget*, KXMLGUIClient*, KActionCollection*, KSharedPtr<KSharedConfig>) () from /usr/lib/libkmailprivate.so.4
#30 0x0105da1a in ?? () from /usr/lib/libkmailprivate.so.4
#31 0x01270701 in KMKernel::openReader(bool) () from /usr/lib/libkmailprivate.so.4
#32 0x01277bbb in KMKernel::action(bool, bool, QString const&, QString const&, QString const&, QString const&, QString const&, KUrl const&, KUrl::List const&, QStringList const&) () from /usr/lib/libkmailprivate.so.4
#33 0x0127a435 in KMKernel::handleCommandLine(bool) () from /usr/lib/libkmailprivate.so.4
#34 0x08049dd9 in _start ()


Reproducible: Didn't try