Application that crashed: lancelot
Version of the application: 1.7
KDE Version: 4.2.87 (KDE 4.2.87 (KDE 4.3 >= 20090519))
Qt Version: 4.5.1
Operating System: Linux 2.6.28.5 x86_64

What I was doing when the application crashed:
After selecting Lancelot with the mouse, I typed ark into the searcg bar and pressed the enter key.  I was then presented with this crash dialog, ark did not start.  I was unable to duplicate after selecting and typing ark a second time in the search bar, ark started without any issues.

 -- Backtrace:
Application: Lancelot (lancelot), signal: Segmentation fault
[Current thread is 0 (LWP 1473)]

Thread 5 (Thread 0x41fe8950 (LWP 1621)):
#0  0x00007f260e77bb99 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f260e9efa65 in QWaitCondition::wait (this=<value optimized out>, mutex=0xb5e980, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007f2609bf2cce in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned () from /opt/lib/libthreadweaver.so.4
#3  0x00007f2609bf4f8b in ThreadWeaver::WorkingHardState::applyForWork () from /opt/lib/libthreadweaver.so.4
#4  0x00007f2609bf4fa4 in ThreadWeaver::WorkingHardState::applyForWork () from /opt/lib/libthreadweaver.so.4
#5  0x00007f2609bf3546 in ThreadWeaver::ThreadRunHelper::run () from /opt/lib/libthreadweaver.so.4
#6  0x00007f2609bf3979 in ThreadWeaver::Thread::run () from /opt/lib/libthreadweaver.so.4
#7  0x00007f260e9ef080 in QThreadPrivate::start (arg=0xe6f7c0) at thread/qthread_unix.cpp:189
#8  0x00007f260e7773f7 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f260cff81dd in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x427e9950 (LWP 1622)):
#0  0x00007f260e77bb99 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f260e9efa65 in QWaitCondition::wait (this=<value optimized out>, mutex=0xb5e980, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007f2609bf2cce in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned () from /opt/lib/libthreadweaver.so.4
#3  0x00007f2609bf4f8b in ThreadWeaver::WorkingHardState::applyForWork () from /opt/lib/libthreadweaver.so.4
#4  0x00007f2609bf3546 in ThreadWeaver::ThreadRunHelper::run () from /opt/lib/libthreadweaver.so.4
#5  0x00007f2609bf3979 in ThreadWeaver::Thread::run () from /opt/lib/libthreadweaver.so.4
#6  0x00007f260e9ef080 in QThreadPrivate::start (arg=0xee1d30) at thread/qthread_unix.cpp:189
#7  0x00007f260e7773f7 in start_thread () from /lib64/libpthread.so.0
#8  0x00007f260cff81dd in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x42fea950 (LWP 1623)):
#0  0x00007f260e77bb99 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f260e9efa65 in QWaitCondition::wait (this=<value optimized out>, mutex=0xb5e980, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007f2609bf2cce in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned () from /opt/lib/libthreadweaver.so.4
#3  0x00007f2609bf4f8b in ThreadWeaver::WorkingHardState::applyForWork () from /opt/lib/libthreadweaver.so.4
#4  0x00007f2609bf3546 in ThreadWeaver::ThreadRunHelper::run () from /opt/lib/libthreadweaver.so.4
#5  0x00007f2609bf3979 in ThreadWeaver::Thread::run () from /opt/lib/libthreadweaver.so.4
#6  0x00007f260e9ef080 in QThreadPrivate::start (arg=0xe51a90) at thread/qthread_unix.cpp:189
#7  0x00007f260e7773f7 in start_thread () from /lib64/libpthread.so.0
#8  0x00007f260cff81dd in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x437eb950 (LWP 1624)):
#0  0x00007f260e77bb99 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f260e9efa65 in QWaitCondition::wait (this=<value optimized out>, mutex=0xb5e980, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007f2609bf2cce in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned () from /opt/lib/libthreadweaver.so.4
#3  0x00007f2609bf4f8b in ThreadWeaver::WorkingHardState::applyForWork () from /opt/lib/libthreadweaver.so.4
#4  0x00007f2609bf4fa4 in ThreadWeaver::WorkingHardState::applyForWork () from /opt/lib/libthreadweaver.so.4
#5  0x00007f2609bf3546 in ThreadWeaver::ThreadRunHelper::run () from /opt/lib/libthreadweaver.so.4
#6  0x00007f2609bf3979 in ThreadWeaver::Thread::run () from /opt/lib/libthreadweaver.so.4
#7  0x00007f260e9ef080 in QThreadPrivate::start (arg=0x7d2bf0) at thread/qthread_unix.cpp:189
#8  0x00007f260e7773f7 in start_thread () from /lib64/libpthread.so.0
#9  0x00007f260cff81dd in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f2611a44750 (LWP 1473)):
[KCrash Handler]
#5  0x00007f26111a08af in Plasma::QueryMatch::run () from /opt/lib/libplasma.so.3
#6  0x00007f26111a226a in Plasma::RunnerContext::run () from /opt/lib/libplasma.so.3
#7  0x00007f26111a5a56 in Plasma::RunnerManager::run () from /opt/lib/libplasma.so.3
#8  0x00007f26111a5b82 in Plasma::RunnerManager::run () from /opt/lib/libplasma.so.3
#9  0x0000000000427195 in Models::Runner::activate ()
#10 0x00007f2610e5403d in Lancelot::ActionListModel::activated () from /opt/lib/liblancelot.so.0
#11 0x00007f2610e40242 in Lancelot::ActionListViewItemFactory::activate () from /opt/lib/liblancelot.so.0
#12 0x000000000043683d in LancelotWindow::eventFilter ()
#13 0x00007f260eabc8be in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x739e40, event=0x7fff19b832a0) at kernel/qcoreapplication.cpp:726
#14 0x00007f260dbd37c0 in QApplicationPrivate::notify_helper (this=0x6ba2f0, receiver=0x739e40, e=0x7fff19b832a0) at kernel/qapplication.cpp:4053
#15 0x00007f260dbdacb7 in QApplication::notify (this=<value optimized out>, receiver=0x739e40, e=0x7fff19b832a0) at kernel/qapplication.cpp:3663
#16 0x00007f260f6a042b in KApplication::notify () from /opt/lib/libkdeui.so.5
#17 0x00007f260eabc404 in QCoreApplication::notifyInternal (this=0x6a9530, receiver=0x739e40, event=0x7fff19b832a0) at kernel/qcoreapplication.cpp:606
#18 0x00007f260dbd3d8c in qt_sendSpontaneousEvent (receiver=0xe3cec0, event=0x7fff19b82cf0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#19 0x00007f260dc52984 in QKeyMapper::sendKeyEvent (keyWidget=0x739e40, grab=<value optimized out>, type=QEvent::KeyPress, code=16777220, modifiers=@0x7fff19b837e0, text=@0x7fff19b837d0, 
    autorepeat=<value optimized out>, count=1, nativeScanCode=36, nativeVirtualKey=65293, nativeModifiers=16) at kernel/qkeymapper_x11.cpp:1675
#20 0x00007f260dc548f0 in QKeyMapperPrivate::translateKeyEvent (this=0x6db2c0, keyWidget=0x739e40, event=0x7fff19b84f20, grab=false) at kernel/qkeymapper_x11.cpp:1645
#21 0x00007f260dc31799 in QApplication::x11ProcessEvent (this=0x6a9530, event=0x7fff19b84f20) at kernel/qapplication_x11.cpp:3459
#22 0x00007f260dc55cf3 in x11EventSourceDispatch (s=0x6bd6a0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#23 0x00007f2607e139c4 in g_main_context_dispatch () from /usr/lib64/libglib-2.0.so.0
#24 0x00007f2607e16cc5 in ?? () from /usr/lib64/libglib-2.0.so.0
#25 0x00007f2607e171ab in g_main_context_iteration () from /usr/lib64/libglib-2.0.so.0
#26 0x00007f260eae167f in QEventDispatcherGlib::processEvents (this=0x6b9960, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:324
#27 0x00007f260dc55b3f in QGuiEventDispatcherGlib::processEvents (this=0x21, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#28 0x00007f260eabb835 in QEventLoop::processEvents (this=<value optimized out>, flags=@0x7fff19b851f0) at kernel/qeventloop.cpp:149
#29 0x00007f260eabb9a7 in QEventLoop::exec (this=0x7fff19b85230, flags=@0x7fff19b85240) at kernel/qeventloop.cpp:196
#30 0x00007f260eabda3c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#31 0x0000000000433007 in LancelotApplication::main ()
#32 0x00007f260cf3f164 in __libc_start_main () from /lib64/libc.so.6
#33 0x00000000004145c9 in _start ()