Application: plasma-desktop (0.3)
KDE Platform Version: 4.4.3 (KDE 4.4.3)
Qt Version: 4.6.2
Operating System: Linux 2.6.33-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
That's it. Right after loging in I pressed ALT+F1 as sometimes do to open kickoff and start typing first three characters from an application name I wanted to launch.
Then, an strange thing happened: after introducing the first three letters nothing showed up so it was obvious 'something' was happening.
I clicked then in the search bar to edit the word I just entered - it was written ok, no need for any edit at all but since the application name didn't show up I think about cleaning the bar and retype the few letters.
I pressed Bakspace and nothing happens, pressed again the same, pressed one more time and everything blow up. Plasma crashed and recovered itself few moments later but my wallpapers from desktops 1, 2 and 4 were gone.
Gonna restart right now after submitting this report.

Best and thanks a lot for this great DE/WM that you make for all of us =)

 -- Backtrace:
Application: Área de trabajo de Plasma (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f2f97fdb760 (LWP 5270))]

Thread 10 (Thread 0x7f2f6f9e0710 (LWP 5280)):
#0  0x00007f2f962d516c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f2f8de45ad0 in ?? () from /usr/lib/libQtWebKit.so.4
#2  0x00007f2f8de45b09 in ?? () from /usr/lib/libQtWebKit.so.4
#3  0x00007f2f962d097a in start_thread () from /lib/libpthread.so.0
#4  0x00007f2f950d901d in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7f2f74f4c710 (LWP 5473)):
#0  0x00007f2f962d516c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f2f9655726b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f2f8d62805e in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned(ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#3  0x00007f2f8d62a373 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) () from /usr/lib/libthreadweaver.so.4
#4  0x00007f2f8d62926f in ThreadWeaver::ThreadRunHelper::run(ThreadWeaver::WeaverImpl*, ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#5  0x00007f2f8d6292f8 in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#6  0x00007f2f96556ba5 in ?? () from /usr/lib/libQtCore.so.4
#7  0x00007f2f962d097a in start_thread () from /lib/libpthread.so.0
#8  0x00007f2f950d901d in clone () from /lib/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f2f6d06b710 (LWP 5474)):
#0  0x00007f2f962d516c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f2f9655726b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f2f8d62805e in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned(ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#3  0x00007f2f8d62a373 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) () from /usr/lib/libthreadweaver.so.4
#4  0x00007f2f8d62a38c in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) () from /usr/lib/libthreadweaver.so.4
#5  0x00007f2f8d62a38c in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) () from /usr/lib/libthreadweaver.so.4
#6  0x00007f2f8d62a38c in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) () from /usr/lib/libthreadweaver.so.4
#7  0x00007f2f8d62926f in ThreadWeaver::ThreadRunHelper::run(ThreadWeaver::WeaverImpl*, ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#8  0x00007f2f8d6292f8 in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#9  0x00007f2f96556ba5 in ?? () from /usr/lib/libQtCore.so.4
#10 0x00007f2f962d097a in start_thread () from /lib/libpthread.so.0
#11 0x00007f2f950d901d in clone () from /lib/libc.so.6
#12 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f2f6d86c710 (LWP 5475)):
#0  0x00007f2f962d516c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f2f9655726b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f2f8d62805e in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned(ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#3  0x00007f2f8d62a373 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) () from /usr/lib/libthreadweaver.so.4
#4  0x00007f2f8d62926f in ThreadWeaver::ThreadRunHelper::run(ThreadWeaver::WeaverImpl*, ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#5  0x00007f2f8d6292f8 in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#6  0x00007f2f96556ba5 in ?? () from /usr/lib/libQtCore.so.4
#7  0x00007f2f962d097a in start_thread () from /lib/libpthread.so.0
#8  0x00007f2f950d901d in clone () from /lib/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f2f6c069710 (LWP 5476)):
#0  0x00007f2f962d516c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f2f9655726b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f2f8d62805e in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned(ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#3  0x00007f2f8d62a373 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) () from /usr/lib/libthreadweaver.so.4
#4  0x00007f2f8d62926f in ThreadWeaver::ThreadRunHelper::run(ThreadWeaver::WeaverImpl*, ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#5  0x00007f2f8d6292f8 in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#6  0x00007f2f96556ba5 in ?? () from /usr/lib/libQtCore.so.4
#7  0x00007f2f962d097a in start_thread () from /lib/libpthread.so.0
#8  0x00007f2f950d901d in clone () from /lib/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f2f63fff710 (LWP 5477)):
#0  0x00007f2f962d516c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f2f9655726b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f2f8d62805e in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned(ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#3  0x00007f2f8d62a373 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) () from /usr/lib/libthreadweaver.so.4
#4  0x00007f2f8d62926f in ThreadWeaver::ThreadRunHelper::run(ThreadWeaver::WeaverImpl*, ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#5  0x00007f2f8d6292f8 in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#6  0x00007f2f96556ba5 in ?? () from /usr/lib/libQtCore.so.4
#7  0x00007f2f962d097a in start_thread () from /lib/libpthread.so.0
#8  0x00007f2f950d901d in clone () from /lib/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f2f6aafb710 (LWP 5478)):
#0  0x00007f2f962d516c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f2f9655726b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f2f8d62805e in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned(ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#3  0x00007f2f8d62a373 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) () from /usr/lib/libthreadweaver.so.4
#4  0x00007f2f8d62926f in ThreadWeaver::ThreadRunHelper::run(ThreadWeaver::WeaverImpl*, ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#5  0x00007f2f8d6292f8 in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#6  0x00007f2f96556ba5 in ?? () from /usr/lib/libQtCore.so.4
#7  0x00007f2f962d097a in start_thread () from /lib/libpthread.so.0
#8  0x00007f2f950d901d in clone () from /lib/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f2f6a2fa710 (LWP 5479)):
#0  0x00007f2f962d516c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f2f9655726b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f2f8d62805e in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned(ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#3  0x00007f2f8d62a373 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) () from /usr/lib/libthreadweaver.so.4
#4  0x00007f2f8d62926f in ThreadWeaver::ThreadRunHelper::run(ThreadWeaver::WeaverImpl*, ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#5  0x00007f2f8d6292f8 in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#6  0x00007f2f96556ba5 in ?? () from /usr/lib/libQtCore.so.4
#7  0x00007f2f962d097a in start_thread () from /lib/libpthread.so.0
#8  0x00007f2f950d901d in clone () from /lib/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f2f69af9710 (LWP 5480)):
#0  0x00007f2f962d516c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f2f9655726b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/libQtCore.so.4
#2  0x00007f2f8d62805e in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned(ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#3  0x00007f2f8d62a373 in ThreadWeaver::WorkingHardState::applyForWork(ThreadWeaver::Thread*, ThreadWeaver::Job*) () from /usr/lib/libthreadweaver.so.4
#4  0x00007f2f8d62926f in ThreadWeaver::ThreadRunHelper::run(ThreadWeaver::WeaverImpl*, ThreadWeaver::Thread*) () from /usr/lib/libthreadweaver.so.4
#5  0x00007f2f8d6292f8 in ThreadWeaver::Thread::run() () from /usr/lib/libthreadweaver.so.4
#6  0x00007f2f96556ba5 in ?? () from /usr/lib/libQtCore.so.4
#7  0x00007f2f962d097a in start_thread () from /lib/libpthread.so.0
#8  0x00007f2f950d901d in clone () from /lib/libc.so.6
#9  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f2f97fdb760 (LWP 5270)):
[KCrash Handler]
#5  0x00007f2f9665c1e6 in QVariant::QVariant(QVariant const&) () from /usr/lib/libQtCore.so.4
#6  0x00007f2f94ad6bf7 in QDBusPendingReplyData::argumentAt(int) const () from /usr/lib/libQtDBus.so.4
#7  0x00007f2f7770f58a in SystemTray::DBusSystemTrayTaskPrivate::refreshCallback(QDBusPendingCallWatcher*) () from /usr/lib/kde4/plasma_applet_systemtray.so
#8  0x00007f2f7771155d in SystemTray::DBusSystemTrayTask::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/kde4/plasma_applet_systemtray.so
#9  0x00007f2f9665362f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#10 0x00007f2f94ad603f in QDBusPendingCallWatcher::finished(QDBusPendingCallWatcher*) () from /usr/lib/libQtDBus.so.4
#11 0x00007f2f94ad60c9 in QDBusPendingCallWatcher::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libQtDBus.so.4
#12 0x00007f2f96650ec9 in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#13 0x00007f2f9581de84 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#14 0x00007f2f95821f6a in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#15 0x00007f2f96b5be86 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#16 0x00007f2f9663f79c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#17 0x00007f2f96642e3d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#18 0x00007f2f96667ad3 in ?? () from /usr/lib/libQtCore.so.4
#19 0x00007f2f91cf4b33 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#20 0x00007f2f91cf5310 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#21 0x00007f2f91cf55ad in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#22 0x00007f2f9666800f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#23 0x00007f2f958bd4be in ?? () from /usr/lib/libQtGui.so.4
#24 0x00007f2f9663eb82 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#25 0x00007f2f9663edbc in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#26 0x00007f2f966430eb in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#27 0x00007f2f8bc932cd in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#28 0x0000000000406693 in _start ()

Reported using DrKonqi