Application: kate (3.4.2)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-21-generic i686
Distribution: Ubuntu 10.04 LTS

-- Information about the crash:
I started kate and opened some documents. When I close one document with the hotkey Ctrl+W Kate crashes

Ubuntu 10.04 Final

The crash can be reproduced every time.

 -- Backtrace:
Application: Kate (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb77b3aa0 (LWP 2711))]

Thread 2 (Thread 0xb4ec7b70 (LWP 2712)):
#0  0x05854e16 in *__GI_clock_gettime (clock_id=92639220, tp=0xb4ec6fb8) at ../sysdeps/unix/clock_gettime.c:100
#1  0x00fd56fb in ?? () from /usr/lib/libQtCore.so.4
#2  0x00fda825 in ?? () from /usr/lib/libQtCore.so.4
#3  0x00fda86a in ?? () from /usr/lib/libQtCore.so.4
#4  0x00fd8818 in ?? () from /usr/lib/libQtCore.so.4
#5  0x00fd88a5 in ?? () from /usr/lib/libQtCore.so.4
#6  0x038fbaca in g_main_context_prepare () from /lib/libglib-2.0.so.0
#7  0x038fbee9 in ?? () from /lib/libglib-2.0.so.0
#8  0x038fc4b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#9  0x00fd860f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#10 0x00fab059 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#11 0x00fab4aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#12 0x00ea75a8 in QThread::exec() () from /usr/lib/libQtCore.so.4
#13 0x00f8ac1b in ?? () from /usr/lib/libQtCore.so.4
#14 0x00eaa32e in ?? () from /usr/lib/libQtCore.so.4
#15 0x0011596e in start_thread (arg=0xb4ec7b70) at pthread_create.c:300
#16 0x070eda0e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb77b3aa0 (LWP 2711)):
[KCrash Handler]
#6  0x00f5a921 in QUrl::QUrl(QUrl const&) () from /usr/lib/libQtCore.so.4
#7  0x002e0ea9 in KUrl::KUrl(KUrl const&) () from /usr/lib/libkdecore.so.5
#8  0x0058dd2f in KParts::ReadOnlyPart::url() const () from /usr/lib/libkparts.so.4
#9  0x01581c24 in ?? () from /usr/lib/libkateinterfaces.so.4
#10 0x015bb654 in ?? () from /usr/lib/libkateinterfaces.so.4
#11 0x015bd60c in ?? () from /usr/lib/libkateinterfaces.so.4
#12 0x015beb38 in ?? () from /usr/lib/libkateinterfaces.so.4
#13 0x0158d554 in ?? () from /usr/lib/libkateinterfaces.so.4
#14 0x01592c65 in ?? () from /usr/lib/libkateinterfaces.so.4
#15 0x00fb1c9a in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#16 0x00fc03d5 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#17 0x01595ec7 in ?? () from /usr/lib/libkateinterfaces.so.4
#18 0x0159844b in ?? () from /usr/lib/libkateinterfaces.so.4
#19 0x01599301 in ?? () from /usr/lib/libkateinterfaces.so.4
#20 0x0159a8dc in ?? () from /usr/lib/libkateinterfaces.so.4
#21 0x00fb1c9a in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#22 0x00fc03d5 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#23 0x0157bd43 in ?? () from /usr/lib/libkateinterfaces.so.4
#24 0x0157d379 in ?? () from /usr/lib/libkateinterfaces.so.4
#25 0x01582499 in ?? () from /usr/lib/libkateinterfaces.so.4
#26 0x01595fb8 in ?? () from /usr/lib/libkateinterfaces.so.4
#27 0x01598fd5 in ?? () from /usr/lib/libkateinterfaces.so.4
#28 0x0159a820 in ?? () from /usr/lib/libkateinterfaces.so.4
#29 0x00fb1c9a in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#30 0x00fc03d5 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#31 0x05aa2bd9 in QAction::triggered(bool) () from /usr/lib/libQtGui.so.4
#32 0x05aa4dcc in QAction::activate(QAction::ActionEvent) () from /usr/lib/libQtGui.so.4
#33 0x05f97bd2 in QToolButton::nextCheckState() () from /usr/lib/libQtGui.so.4
#34 0x05eb4cb3 in ?? () from /usr/lib/libQtGui.so.4
#35 0x05eb4fae in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/libQtGui.so.4
#36 0x05f9809c in QToolButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/libQtGui.so.4
#37 0x05b077f8 in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#38 0x05eb3d4e in QAbstractButton::event(QEvent*) () from /usr/lib/libQtGui.so.4
#39 0x05f9abca in QToolButton::event(QEvent*) () from /usr/lib/libQtGui.so.4
#40 0x05aa94dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#41 0x05ab09f7 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#42 0x00b70f2a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#43 0x00faca3b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#44 0x05aaf952 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/libQtGui.so.4
#45 0x05b3b088 in ?? () from /usr/lib/libQtGui.so.4
#46 0x05b3a511 in QApplication::x11ProcessEvent(_XEvent*) () from /usr/lib/libQtGui.so.4
#47 0x05b6960a in ?? () from /usr/lib/libQtGui.so.4
#48 0x038f85e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#49 0x038fc2d8 in ?? () from /lib/libglib-2.0.so.0
#50 0x038fc4b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#51 0x00fd85d5 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#52 0x05b69135 in ?? () from /usr/lib/libQtGui.so.4
#53 0x00fab059 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#54 0x00fab4aa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#55 0x00faf69f in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#56 0x05aa9577 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#57 0x055aca65 in kdemain () from /usr/lib/libkdeinit4_kate.so
#58 0x0804e133 in _start ()

Reported using DrKonqi