Application that crashed: kdevelop
Version of the application: 3.9.95 (using KDevPlatform 0.9.95)
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-17-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
I cannot start Kdevelop. It always crashes due to segmentation fault on launch. 
When launching the app on the console I get this message:
---------------------------------------------------------------------------------------------------------

WARNING: deleting stale lockfile /home/anheru/.kdevduchain/0/lock
<unknown program name>(3194)/ KDevelop::allocateRepository: picked duchain directory "/home/anheru/.kdevduchain/0"
QObject::connect: Cannot connect (null)::sessionAdded(KDevelop::IDebugSession*) to KDevelop::VariableCollection::updateAutoUpdate(KDevelop::IDebugSession*)
Calling appendChild() on a null node does nothing.
Calling appendChild() on a null node does nothing.
Calling appendChild() on a null node does nothing.
Calling appendChild() on a null node does nothing.
Calling appendChild() on a null node does nothing.
Calling appendChild() on a null node does nothing.
Calling appendChild() on a null node does nothing.
Calling appendChild() on a null node does nothing.
Calling appendChild() on a null node does nothing.
Calling appendChild() on a null node does nothing.
QObject: Cannot create children for a parent that is in a different thread.
(Parent is Cpp::CodeCompletionModel(0xa8c6a90), parent's thread is QThread(0x9e1a468), current thread is QThread(0xa8c5228)
QObject: Cannot create children for a parent that is in a different thread.
(Parent is Cpp::MissingIncludeCompletionModel(0xa8c6b20), parent's thread is QThread(0x9e1a468), current thread is QThread(0xa8c5478)
KCrash: Application 'kdevelop' crashing...
sock_file=/home/anheru/.kde/socket-anheru-desktop/kdeinit4__0
Warning: connect() failed: : No existe el fichero ó directorio
KCrash cannot reach kdeinit, launching directly.


 -- Backtrace:
Application: KDevelop (kdevelop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb781c700 (LWP 3194))]

Thread 5 (Thread 0xb4192b70 (LWP 3196)):
#0  0x00e82422 in __kernel_vsyscall ()
#1  0x0121f142 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_timedwait.S:179
#2  0x0058f8d4 in __pthread_cond_timedwait (cond=0xa3ee670, mutex=0xa3ee658, abstime=0xb41922c0) at forward.c:152
#3  0x0015fdef in QWaitConditionPrivate::wait (this=0xa3ef114, mutex=0xa3ef118, time=200000) at thread/qwaitcondition_unix.cpp:85
#4  QWaitCondition::wait (this=0xa3ef114, mutex=0xa3ef118, time=200000) at thread/qwaitcondition_unix.cpp:159
#5  0x02832715 in KDevelop::DUChainPrivate::CleanupThread::run (this=0xa3ef108) at ../../language/duchain/duchain.cpp:280
#6  0x0015ee32 in QThreadPrivate::start (arg=0xa3ef108) at thread/qthread_unix.cpp:188
#7  0x0121a80e in start_thread (arg=0xb4192b70) at pthread_create.c:300
#8  0x005828de in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 4 (Thread 0xb1246b70 (LWP 3215)):
#0  0x07a11cd3 in g_main_context_check () from /lib/libglib-2.0.so.0
#1  0x07a1247c in ?? () from /lib/libglib-2.0.so.0
#2  0x07a12863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x0027a067 in QEventDispatcherGlib::processEvents (this=0xa8c5360, flags=...) at kernel/qeventdispatcher_glib.cpp:329
#4  0x0024dc79 in QEventLoop::processEvents (this=0xb12462d4, flags=) at kernel/qeventloop.cpp:149
#5  0x0024e0ca in QEventLoop::exec (this=0xb12462d4, flags=...) at kernel/qeventloop.cpp:201
#6  0x0015bb73 in QThread::exec (this=0xa8c5228) at thread/qthread.cpp:487
#7  0x029371d0 in KDevelop::CompletionWorkerThread::run (this=0xa8c5228) at ../../language/codecompletion/codecompletionmodel.cpp:79
#8  0x0015ee32 in QThreadPrivate::start (arg=0xa8c5228) at thread/qthread_unix.cpp:188
#9  0x0121a80e in start_thread (arg=0xb1246b70) at pthread_create.c:300
#10 0x005828de in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 3 (Thread 0xb0a45b70 (LWP 3216)):
#0  0x046bae06 in *__GI_clock_gettime (clock_id=74182644, tp=0xb0a45018) at ../sysdeps/unix/clock_gettime.c:100
#1  0x0027bbf3 in QTimerInfoList::getTime (this=0xa8b7fa4, t=...) at kernel/qeventdispatcher_unix.cpp:339
#2  0x0027bde1 in QTimerInfoList::updateCurrentTime (this=0xa8b7fa4) at kernel/qeventdispatcher_unix.cpp:297
#3  0x0027c88c in QTimerInfoList::timerWait (this=0xa8b7fa4, tm=...) at kernel/qeventdispatcher_unix.cpp:420
#4  0x0027a210 in timerSourcePrepare (source=0xa8b7f70, timeout=0xb0a4510c) at kernel/qeventdispatcher_glib.cpp:141
#5  0x07a11f90 in g_main_context_prepare () from /lib/libglib-2.0.so.0
#6  0x07a12351 in ?? () from /lib/libglib-2.0.so.0
#7  0x07a12863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#8  0x0027a067 in QEventDispatcherGlib::processEvents (this=0xa8b2b70, flags=...) at kernel/qeventdispatcher_glib.cpp:329
#9  0x0024dc79 in QEventLoop::processEvents (this=0xb0a452d4, flags=) at kernel/qeventloop.cpp:149
#10 0x0024e0ca in QEventLoop::exec (this=0xb0a452d4, flags=...) at kernel/qeventloop.cpp:201
#11 0x0015bb73 in QThread::exec (this=0xa8c5478) at thread/qthread.cpp:487
#12 0x029371d0 in KDevelop::CompletionWorkerThread::run (this=0xa8c5478) at ../../language/codecompletion/codecompletionmodel.cpp:79
#13 0x0015ee32 in QThreadPrivate::start (arg=0xa8c5478) at thread/qthread_unix.cpp:188
#14 0x0121a80e in start_thread (arg=0xb0a45b70) at pthread_create.c:300
#15 0x005828de in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 2 (Thread 0xb0244b70 (LWP 3219)):
#0  0x00e82422 in __kernel_vsyscall ()
#1  0x0121f142 in pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_timedwait.S:179
#2  0x0058f8d4 in __pthread_cond_timedwait (cond=0xb0244234, mutex=0xb0244264, abstime=0xb02442b0) at forward.c:152
#3  0x0015e81e in thread_sleep (ti=0x1) at thread/qthread_unix.cpp:297
#4  0x0015e973 in QThread::msleep (msecs=30) at thread/qthread_unix.cpp:323
#5  0x02f192ab in ?? () from /usr/lib/kde4/kdevcpplanguagesupport.so
#6  0x0015ee32 in QThreadPrivate::start (arg=0xa930360) at thread/qthread_unix.cpp:188
#7  0x0121a80e in start_thread (arg=0xb0244b70) at pthread_create.c:300
#8  0x005828de in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb781c700 (LWP 3194)):
[KCrash Handler]
#5  QListData::begin (this=0x0, watcher=0xa160f1c) at /usr/include/qt4/QtCore/qlist.h:90
#6  QList<KTextEditor::SmartRangeWatcher*>::contains (this=0x0, watcher=0xa160f1c) at /usr/include/qt4/QtCore/qlist.h:664
#7  KTextEditor::SmartRange::addWatcher (this=0x0, watcher=0xa160f1c) at ../../../interfaces/ktexteditor/smartrange.cpp:893
#8  0x027fceb9 in KDevelop::BackgroundParser::addManagedTopRange (this=0xa160f10, document=..., range=0x0) at ../../language/backgroundparser/backgroundparser.cpp:625
#9  0x028190c0 in KDevelop::DUChain::documentLoadedPrepare (this=0xa3e4c30, doc=0xaa94050) at ../../language/duchain/duchain.cpp:1463
#10 0x0281baf7 in KDevelop::DUChain::qt_metacall (this=0xa3e4c30, _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0xbf8cc828) at ./duchain.moc:162
#11 0x00265263 in QMetaObject::activate (sender=0xa1cee38, from_signal_index=13, to_signal_index=13, argv=0xbf8cc828) at kernel/qobject.cpp:3113
#12 0x00265ec2 in QMetaObject::activate (sender=0xa1cee38, m=0x9f8614, local_signal_index=9, argv=0xbf8cc828) at kernel/qobject.cpp:3187
#13 0x009eacb3 in KDevelop::IDocumentController::documentLoadedPrepare (this=0xa1cee38, _t1=0xaa94050) at ./idocumentcontroller.moc:256
#14 0x009e87f2 in KDevelop::IDocument::notifyLoaded (this=0xaa94050) at ../../interfaces/idocument.cpp:119
#15 0x0069ada9 in KDevelop::TextDocumentPrivate::slotDocumentLoaded (this=0xaa94040, _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0xbf8cc9a8) at ../../shell/textdocument.cpp:154
#16 KDevelop::TextDocument::qt_metacall (this=0xaa94040, _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0xbf8cc9a8) at ./textdocument.moc:86
#17 0x00265263 in QMetaObject::activate (sender=0xb8bf968, from_signal_index=24, to_signal_index=24, argv=0xbf8cc9a8) at kernel/qobject.cpp:3113
#18 0x00265ec2 in QMetaObject::activate (sender=0xb8bf968, m=0x4b3890, local_signal_index=5, argv=0xbf8cc9a8) at kernel/qobject.cpp:3187
#19 0x0049ed13 in KTextEditor::Document::textChanged (this=0xb8bf968, _t1=0xb8bf968) at ./document.moc:156
#20 0x049cfa03 in KateDocument::openFile (this=0xb8bf968) at ../../kate/document/katedocument.cpp:3191
#21 0x0092c819 in KParts::ReadOnlyPart::openUrl (this=0xb8bf968, url=...) at ../../kparts/part.cpp:557
#22 0x0069b301 in KDevelop::TextDocument::createViewWidget (this=0xaa94040, parent=0xaafe2a0) at ../../shell/textdocument.cpp:239
#23 0x0069a52e in KDevelop::TextView::createWidget (this=0xaa720a8, parent=0xaafe2a0) at ../../shell/textdocument.cpp:504
#24 0x022186e7 in Sublime::View::widget(QWidget*) () from /usr/lib/libsublime.so.1
#25 0x022138a2 in ?? () from /usr/lib/libsublime.so.1
#26 0x02217469 in Sublime::Area::WalkerMode Sublime::Area::walkViewsInternal<Sublime::MainWindowPrivate::ViewCreator>(Sublime::MainWindowPrivate::ViewCreator&, Sublime::AreaIndex*) ()
   from /usr/lib/libsublime.so.1
#27 0x02214298 in ?? () from /usr/lib/libsublime.so.1
#28 0x0220ab84 in Sublime::MainWindow::setArea(Sublime::Area*) () from /usr/lib/libsublime.so.1
#29 0x02217544 in Sublime::MainWindowOperator::setArea(Sublime::MainWindow*, Sublime::Area*) () from /usr/lib/libsublime.so.1
#30 0x02205c4b in Sublime::Controller::showAreaInternal(Sublime::Area*, Sublime::MainWindow*) () from /usr/lib/libsublime.so.1
#31 0x02206ac9 in Sublime::Controller::showArea(Sublime::Area*, Sublime::MainWindow*) () from /usr/lib/libsublime.so.1
#32 0x00665c39 in ~DisconnectMainWindowsFromArea (this=0xa20af28, area=0xa23b650, areaIndex=0xa23b470, clear=false) at ../../shell/workingsetcontroller.cpp:243
#33 KDevelop::WorkingSet::loadToArea (this=0xa20af28, area=0xa23b650, areaIndex=0xa23b470, clear=false) at ../../shell/workingsetcontroller.cpp:321
#34 0x00666eea in KDevelop::WorkingSet::changedWorkingSet (this=0xa20af28, area=0xa23b650, from=..., to=...) at ../../shell/workingsetcontroller.cpp:602
#35 0x0066895c in KDevelop::WorkingSet::qt_metacall (this=0xa20af28, _c=QMetaObject::InvokeMetaMethod, _id=8, _a=0xa289118) at ./workingsetcontroller.moc:83
#36 0x0025df0b in QMetaCallEvent::placeMetaCall (this=0xa61bcc8, object=0xa20af28) at kernel/qobject.cpp:477
#37 0x0025f5fe in QObject::event (this=0xa20af28, e=0xa61bcc8) at kernel/qobject.cpp:1111
#38 0x0360ff54 in QApplicationPrivate::notify_helper (this=0x9ee1d68, receiver=0xa20af28, e=0xa61bcc8) at kernel/qapplication.cpp:4056
#39 0x0361767c in QApplication::notify (this=0xbf8cdb24, receiver=0xa20af28, e=0xa61bcc8) at kernel/qapplication.cpp:3603
#40 0x01055bfa in KApplication::notify (this=0xbf8cdb24, receiver=0xa20af28, event=0xa61bcc8) at ../../kdeui/kernel/kapplication.cpp:302
#41 0x0024f6cb in QCoreApplication::notifyInternal (this=0xbf8cdb24, receiver=0xa20af28, event=0xa61bcc8) at kernel/qcoreapplication.cpp:610
#42 0x002502b2 in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x9e19ef8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#43 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x9e19ef8) at kernel/qcoreapplication.cpp:1247
#44 0x0025047d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1140
#45 0x0027a3ff in QCoreApplication::sendPostedEvents (s=0x9ee4110) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#46 postEventSourceDispatch (s=0x9ee4110) at kernel/qeventdispatcher_glib.cpp:210
#47 0x07a0ee88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#48 0x07a12730 in ?? () from /lib/libglib-2.0.so.0
#49 0x07a12863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#50 0x0027a02c in QEventDispatcherGlib::processEvents (this=0x9e1a0d0, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#51 0x036b0be5 in QGuiEventDispatcherGlib::processEvents (this=0x9e1a0d0, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#52 0x0024dc79 in QEventLoop::processEvents (this=0xbf8cda44, flags=) at kernel/qeventloop.cpp:149
#53 0x0024e0ca in QEventLoop::exec (this=0xbf8cda44, flags=...) at kernel/qeventloop.cpp:201
#54 0x0025053f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#55 0x0360fdd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#56 0x0804f393 in _start ()

This bug may be a duplicate of or related to bug 221297

Reported using DrKonqi