Comment 19 for bug 308605

Me too in Kubuntu Jaunty.

My backtrace is not very useful as most symbols are missing:
(gdb) bt
#0 0xb7feb430 in __kernel_vsyscall ()
#1 0xb7fc5cf9 in __lll_lock_wait () from /lib/tls/i686/cmov/libpthread.so.0
#2 0xb7fc1129 in _L_lock_89 () from /lib/tls/i686/cmov/libpthread.so.0
#3 0xb7fc0a32 in pthread_mutex_lock () from /lib/tls/i686/cmov/libpthread.so.0
#4 0xb63f468f in xcb_writev () from /usr/lib/libxcb.so.1
#5 0xb6a98afa in _XSend () from /usr/lib/libX11.so.6
#6 0xb6a98c23 in _XReply () from /usr/lib/libX11.so.6
#7 0xb6a8c507 in XSync () from /usr/lib/libX11.so.6
#8 0xb6b4c282 in XRenderFindDisplay () from /usr/lib/libXrender.so.1
#9 0xb6b49f25 in XRenderFreePicture () from /usr/lib/libXrender.so.1
#10 0xb4840f49 in ?? () from /usr/lib/libQtGui.so.4
#11 0xb484178d in ?? () from /usr/lib/libQtGui.so.4
#12 0xb4830d97 in QPixmap::deref () from /usr/lib/libQtGui.so.4
#13 0xb48311a0 in QPixmap::~QPixmap () from /usr/lib/libQtGui.so.4
#14 0xb45713fa in ?? () from /usr/lib/kde4/plugins/styles/oxygen.so
#15 0xb457df27 in ?? () from /usr/lib/kde4/plugins/styles/oxygen.so
#16 0xb457ec55 in ?? () from /usr/lib/kde4/plugins/styles/oxygen.so
#17 0xb4594aeb in ?? () from /usr/lib/kde4/plugins/styles/oxygen.so
#18 0xb7d5bbb9 in exit () from /lib/tls/i686/cmov/libc.so.6
#19 0xb7d4377d in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#20 0x08048d11 in ?? ()