Application that crashed: konqueror
Version of the application: 4.3.2 (KDE 4.3.2)
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-15-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
It crashed when I tried to open four pdf files in separte tabs by quick sucession of clicks with central mouse button.

 -- Backtrace:
Application: Konqueror (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f80c8203750 (LWP 2906))]

Thread 2 (Thread 0x7f80ac5dd910 (LWP 3119)):
[KCrash Handler]
#5  0x0000000000000000 in ?? ()
#6  0x00007f80a99ec5bb in GfxICCBasedColorSpace::getRGB(GfxColor*, GfxRGB*) () from /usr/lib/libpoppler.so.5
#7  0x00007f80a99ec643 in GfxICCBasedColorSpace::getGray(GfxColor*, int*) () from /usr/lib/libpoppler.so.5
#8  0x00007f80a9989d52 in SplashOutputDev::updateFillColor(GfxState*) () from /usr/lib/libpoppler.so.5
#9  0x00007f80a99d461c in Gfx::opSetFillColorSpace(Object*, int) () from /usr/lib/libpoppler.so.5
#10 0x00007f80a99c7d7f in Gfx::go(int) () from /usr/lib/libpoppler.so.5
#11 0x00007f80a99cbf04 in Gfx::display(Object*, int) () from /usr/lib/libpoppler.so.5
#12 0x00007f80a9a13660 in Page::displaySlice(OutputDev*, double, double, int, int, int, int, int, int, int, int, Catalog*, int (*)(void*), void*, int (*)(Annot*, void*), void*) ()
   from /usr/lib/libpoppler.so.5
#13 0x00007f80a9d2a89b in Poppler::Page::renderToImage(double, double, int, int, int, int, Poppler::Page::Rotation) const () from /usr/lib/libpoppler-qt4.so.3
#14 0x00007f80ac60c858 in ?? () from /usr/lib/kde4/okularGenerator_poppler.so
#15 0x00007f80c7c49445 in ?? () from /usr/lib/libQtCore.so.4
#16 0x00007f80c49bfa04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#17 0x00007f80c559f7bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#18 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f80c8203750 (LWP 2906)):
#0  0x00007f80c5593373 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f80c350229a in ?? () from /usr/lib/libxcb.so.1
#2  0x00007f80c35027d7 in ?? () from /usr/lib/libxcb.so.1
#3  0x00007f80c3502a85 in xcb_writev () from /usr/lib/libxcb.so.1
#4  0x00007f80c7229d4a in _XSend () from /usr/lib/libX11.so.6
#5  0x00007f80c722a271 in _XEventsQueued () from /usr/lib/libX11.so.6
#6  0x00007f80c721301b in XEventsQueued () from /usr/lib/libX11.so.6
#7  0x00007f80c5d746e7 in ?? () from /usr/lib/libQtGui.so.4
#8  0x00007f80c4c13daa in g_main_context_prepare () from /lib/libglib-2.0.so.0
#9  0x00007f80c4c14181 in ?? () from /lib/libglib-2.0.so.0
#10 0x00007f80c4c146b0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#11 0x00007f80c7d581a6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#12 0x00007f80c5d744be in ?? () from /usr/lib/libQtGui.so.4
#13 0x00007f80c7d2e532 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#14 0x00007f80c7d2e904 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#15 0x00007f80c7d30ab9 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#16 0x00007f80bcddfe26 in kdemain () from /usr/lib/libkdeinit4_konqueror.so
#17 0x0000000000406da8 in _start ()

Reported using DrKonqi