Application that crashed: okular
Version of the application: 0.8.80
KDE Version: 4.2.90 (KDE 4.2.90 (KDE 4.3 Beta2))
Qt Version: 4.5.1
Operating System: Linux 2.6.29-stikonas14 i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
Reproducing a crash.

Open some document and do the following:
Help -> About backend -> Click on license.

Okular crashes. (Tested with PDF and DjVU backends, probably happens with all of them)

Expected behavior:
Okular shows the license dialog box.

 -- Backtrace:
Application: Okular (okular), signal: Segmentation fault
[KCrash Handler]
#6  0xb77a26e9 in KLocalizedString::isEmpty (this=0xbfa6ba50) at /build/buildd/kde4libs-4.2.90/kdecore/localization/klocalizedstring.cpp:198
#7  0xb76fbdfc in KAboutLicense::text (this=0x81cc298) at /build/buildd/kde4libs-4.2.90/kdecore/kernel/kaboutdata.cpp:211
#8  0xb79e680d in KAboutApplicationDialog::Private::_k_showLicense (this=0x85182c0, number=@0xbfa6be28) at /build/buildd/kde4libs-4.2.90/kdeui/dialogs/kaboutapplicationdialog.cpp:266
#9  0xb79e69e2 in KAboutApplicationDialog::qt_metacall (this=0xbfa6dff8, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbfa6bbec)
    at /build/buildd/kde4libs-4.2.90/obj-i486-linux-gnu/kdeui/kaboutapplicationdialog.moc:67
#10 0xb74c9a58 in QMetaObject::activate (sender=0x8a34c50, from_signal_index=27, to_signal_index=27, argv=0xbfa6bbec) at kernel/qobject.cpp:3120
#11 0xb74ca6e2 in QMetaObject::activate (sender=0x8a34c50, m=0xb735a488, local_signal_index=0, argv=0xbfa6bbec) at kernel/qobject.cpp:3194
#12 0xb6ef96f3 in QLabel::linkActivated (this=0x8a34c50, _t1=@0xbfa6be28) at .moc/release-shared/moc_qlabel.cpp:169
#13 0xb6efd8d2 in QLabel::qt_metacall (this=0x8a34c50, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0xbfa6bd0c) at .moc/release-shared/moc_qlabel.cpp:101
#14 0xb74c9a58 in QMetaObject::activate (sender=0x84f4c80, from_signal_index=17, to_signal_index=17, argv=0xbfa6bd0c) at kernel/qobject.cpp:3120
#15 0xb74ca6e2 in QMetaObject::activate (sender=0x84f4c80, m=0xb7357c08, local_signal_index=13, argv=0xbfa6bd0c) at kernel/qobject.cpp:3194
#16 0xb6d103d3 in QTextControl::linkActivated (this=0x84f4c80, _t1=@0xbfa6be28) at .moc/release-shared/moc_qtextcontrol_p.cpp:309
#17 0xb6d199b5 in QTextControlPrivate::activateLinkUnderCursor (this=0x8a353f0, href=
      {static null = {<No data fields>}, static shared_null = {ref = {_q_value = 7590}, alloc = 0, size = 0, data = 0x80544c2, clean = 0, simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, reserved = 0, array = {0}}, static shared_empty = {ref = {_q_value = 67}, alloc = 0, size = 0, data = 0xb75a746e, clean = 0, simpletext = 0, righttoleft = 0, asciiCache = 0, capacity = 0, reserved = 0, array = {0}}, d = 0xbfa6be28, static codecForCStrings = 0x0}) at text/qtextcontrol.cpp:2547
#18 0xb6d1a71f in QTextControlPrivate::mouseReleaseEvent (this=0x8a353f0, button=<value optimized out>, pos=@0xbfa6c040) at text/qtextcontrol.cpp:1678
#19 0xb6d1d78e in QTextControl::processEvent (this=0x84f4c80, e=0xbfa6c6b8, matrix=@0xbfa6c0d8, contextWidget=0x8a34c50) at text/qtextcontrol.cpp:917
#20 0xb6d12a4d in QTextControl::processEvent (this=0x84f4c80, e=0xbfa6c6b8, coordinateOffset=@0xbfa6c158, contextWidget=0x8a34c50) at text/qtextcontrol.cpp:866
#21 0xb6efa086 in QLabelPrivate::sendControlEvent (this=0x8a34c70, e=0xbfa6c6b8) at widgets/qlabel.cpp:1515
#22 0xb6b188c3 in QWidget::event (this=0x8a34c50, event=0xbfa6c6b8) at kernel/qwidget.cpp:7521
#23 0xb6ef62c3 in QFrame::event (this=0x8a34c50, e=0xbfa6c6b8) at widgets/qframe.cpp:559
#24 0xb6efb909 in QLabel::event (this=0x8a34c50, e=0xbfa6c6b8) at widgets/qlabel.cpp:948
#25 0xb6ac1bcc in QApplicationPrivate::notify_helper (this=0x81003e0, receiver=0x8a34c50, e=0xbfa6c6b8) at kernel/qapplication.cpp:4057
#26 0xb6aca851 in QApplication::notify (this=0xbfa70254, receiver=0x8a34c50, e=0xbfa6c6b8) at kernel/qapplication.cpp:3759
#27 0xb7a64c4d in KApplication::notify (this=0xbfa70254, receiver=0x8a34c50, event=0xbfa6c6b8) at /build/buildd/kde4libs-4.2.90/kdeui/kernel/kapplication.cpp:302
#28 0xb74b37ab in QCoreApplication::notifyInternal (this=0xbfa70254, receiver=0x8a34c50, event=0xbfa6c6b8) at kernel/qcoreapplication.cpp:610
#29 0xb6ac98be in QApplicationPrivate::sendMouseEvent (receiver=0x8a34c50, event=0xbfa6c6b8, alienWidget=0x8a34c50, nativeWidget=0xbfa6dff8, buttonDown=0xb736daa0, lastMouseReceiver=@0xb736daa4)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#30 0xb6b39aee in QETWidget::translateMouseEvent (this=0xbfa6dff8, event=0xbfa6dd4c) at kernel/qapplication_x11.cpp:4448
#31 0xb6b38ead in QApplication::x11ProcessEvent (this=0xbfa70254, event=0xbfa6dd4c) at kernel/qapplication_x11.cpp:3444
#32 0xb6b6406a in x11EventSourceDispatch (s=0x8103600, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#33 0xb63abb88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#34 0xb63af0eb in ?? () from /usr/lib/libglib-2.0.so.0
#35 0xb63af268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#36 0xb74df1d8 in QEventDispatcherGlib::processEvents (this=0x81003a0, flags={i = -1079582968}) at kernel/qeventdispatcher_glib.cpp:324
#37 0xb6b63765 in QGuiEventDispatcherGlib::processEvents (this=0x81003a0, flags={i = -1079582920}) at kernel/qguieventdispatcher_glib.cpp:202
#38 0xb74b1dda in QEventLoop::processEvents (this=0xbfa6dfac, flags={i = -1079582856}) at kernel/qeventloop.cpp:149
#39 0xb74b221a in QEventLoop::exec (this=0xbfa6dfac, flags={i = -1079582796}) at kernel/qeventloop.cpp:200
#40 0xb6fdfe13 in QDialog::exec (this=0xbfa6dff8) at dialogs/qdialog.cpp:498
#41 0xb48ff605 in Part::slotAboutBackend (this=0x81ae060) at /build/buildd/kdegraphics-4.2.90/okular/part.cpp:1847
#42 0xb490eb28 in Part::qt_metacall (this=0x81ae060, _c=QMetaObject::InvokeMetaMethod, _id=39, _a=0xbfa6e16c) at /build/buildd/kdegraphics-4.2.90/obj-i486-linux-gnu/okular/part.moc:215
#43 0xb74c9a58 in QMetaObject::activate (sender=0x83925b0, from_signal_index=5, to_signal_index=6, argv=0xbfa6e16c) at kernel/qobject.cpp:3120
#44 0xb74c9e90 in QMetaObject::activate (sender=0x83925b0, m=0xb7354f08, from_local_signal_index=1, to_local_signal_index=2, argv=0xbfa6e16c) at kernel/qobject.cpp:3214
#45 0xb6abb551 in QAction::triggered (this=0x83925b0, _t1=false) at .moc/release-shared/moc_qaction.cpp:236
#46 0xb6abcacf in QAction::activate (this=0x83925b0, event=QAction::Trigger) at kernel/qaction.cpp:1160
#47 0xb6f3a954 in QMenuPrivate::activateCausedStack (this=0x83c0e48, causedStack=@0xbfa6e248, action=0x83925b0, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:967
#48 0xb6f410ab in QMenuPrivate::activateAction (this=0x83c0e48, action=0x83925b0, action_e=QAction::Trigger, self=<value optimized out>) at widgets/qmenu.cpp:1060
#49 0xb6f41bf2 in QMenu::mouseReleaseEvent (this=0x83be5e0, e=0xbfa6e888) at widgets/qmenu.cpp:2254
#50 0xb7b4d315 in KMenu::mouseReleaseEvent (this=0x83be5e0, e=0xbfa6e888) at /build/buildd/kde4libs-4.2.90/kdeui/widgets/kmenu.cpp:456
#51 0xb6b188c3 in QWidget::event (this=0x83be5e0, event=0xbfa6e888) at kernel/qwidget.cpp:7521
#52 0xb6f43ea9 in QMenu::event (this=0x83be5e0, e=0xbfa6e888) at widgets/qmenu.cpp:2353
#53 0xb6ac1bcc in QApplicationPrivate::notify_helper (this=0x81003e0, receiver=0x83be5e0, e=0xbfa6e888) at kernel/qapplication.cpp:4057
#54 0xb6aca851 in QApplication::notify (this=0xbfa70254, receiver=0x83be5e0, e=0xbfa6e888) at kernel/qapplication.cpp:3759
#55 0xb7a64c4d in KApplication::notify (this=0xbfa70254, receiver=0x83be5e0, event=0xbfa6e888) at /build/buildd/kde4libs-4.2.90/kdeui/kernel/kapplication.cpp:302
#56 0xb74b37ab in QCoreApplication::notifyInternal (this=0xbfa70254, receiver=0x83be5e0, event=0xbfa6e888) at kernel/qcoreapplication.cpp:610
#57 0xb6ac98be in QApplicationPrivate::sendMouseEvent (receiver=0x83be5e0, event=0xbfa6e888, alienWidget=0x0, nativeWidget=0x83be5e0, buttonDown=0xb736daa0, lastMouseReceiver=@0xb736daa4)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#58 0xb6b39d76 in QETWidget::translateMouseEvent (this=0x83be5e0, event=0xbfa6ff1c) at kernel/qapplication_x11.cpp:4382
#59 0xb6b38ead in QApplication::x11ProcessEvent (this=0xbfa70254, event=0xbfa6ff1c) at kernel/qapplication_x11.cpp:3444
#60 0xb6b6406a in x11EventSourceDispatch (s=0x8103600, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#61 0xb63abb88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#62 0xb63af0eb in ?? () from /usr/lib/libglib-2.0.so.0
#63 0xb63af268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#64 0xb74df1d8 in QEventDispatcherGlib::processEvents (this=0x81003a0, flags={i = -1079574312}) at kernel/qeventdispatcher_glib.cpp:324
#65 0xb6b63765 in QGuiEventDispatcherGlib::processEvents (this=0x81003a0, flags={i = -1079574264}) at kernel/qguieventdispatcher_glib.cpp:202
#66 0xb74b1dda in QEventLoop::processEvents (this=0xbfa70180, flags={i = -1079574200}) at kernel/qeventloop.cpp:149
#67 0xb74b221a in QEventLoop::exec (this=0xbfa70180, flags={i = -1079574136}) at kernel/qeventloop.cpp:200
#68 0xb74b46c9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#69 0xb6ac1a47 in QApplication::exec () at kernel/qapplication.cpp:3526
#70 0x0804e68f in main (argc=139021560, argv=0x81d50ca) at /build/buildd/kdegraphics-4.2.90/okular/shell/main.cpp:81

Reported using DrKonqi