Version:            (using KDE 4.1.3)
OS:                Linux
Installed from:    Ubuntu Packages

Kwin crashes on start-up, I don't see a bug report that has a solution but may have overlooked something. Here is the crash report:

Application: KWin (kwin), signal SIGABRT
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread 0x7fea89f7f730 (LWP 6145)]
[KCrash handler]
#5  0x00007fea89960fd5 in raise () from /lib/libc.so.6
#6  0x00007fea89962b43 in abort () from /lib/libc.so.6
#7  0x00007fea899a1fa8 in __libc_message () from /lib/libc.so.6
#8  0x00007fea899a883c in malloc_consolidate () from /lib/libc.so.6
#9  0x00007fea899aa601 in _int_malloc () from /lib/libc.so.6
#10 0x00007fea899ac24f in calloc () from /lib/libc.so.6
#11 0x00007fea82b5a973 in ?? () from /usr/lib/libGLcore.so.1
#12 0x00007fea89d2d64c in ?? () from /usr/lib/libkdeinit4_kwin.so
#13 0x00007fea89d275fd in ?? () from /usr/lib/libkdeinit4_kwin.so
#14 0x00007fea89d24955 in ?? () from /usr/lib/libkdeinit4_kwin.so
#15 0x00007fea89d370f4 in ?? () from /usr/lib/libkdeinit4_kwin.so
#16 0x00007fea7eaf4a4e in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#17 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#18 0x00007fea7eae55b9 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#19 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#20 0x00007fea7eadb5d4 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#21 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#22 0x00007fea7eaca925 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#23 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#24 0x00007fea89500fa0 in KWin::Effect::paintScreen ()
   from /usr/lib/libkwineffects.so.1
#25 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#26 0x00007fea89500fa0 in KWin::Effect::paintScreen ()
   from /usr/lib/libkwineffects.so.1
#27 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#28 0x00007fea89500fa0 in KWin::Effect::paintScreen ()
   from /usr/lib/libkwineffects.so.1
#29 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#30 0x00007fea7eaba321 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#31 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#32 0x00007fea7eabe436 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#33 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#34 0x00007fea89500fa0 in KWin::Effect::paintScreen ()
   from /usr/lib/libkwineffects.so.1
#35 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#36 0x00007fea7eae8efd in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#37 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#38 0x00007fea89500fa0 in KWin::Effect::paintScreen ()
   from /usr/lib/libkwineffects.so.1
#39 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#40 0x00007fea89500fa0 in KWin::Effect::paintScreen ()
   from /usr/lib/libkwineffects.so.1
#41 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#42 0x00007fea89500fa0 in KWin::Effect::paintScreen ()
   from /usr/lib/libkwineffects.so.1
#43 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#44 0x00007fea89500fa0 in KWin::Effect::paintScreen ()
   from /usr/lib/libkwineffects.so.1
#45 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#46 0x00007fea89500fa0 in KWin::Effect::paintScreen ()
   from /usr/lib/libkwineffects.so.1
#47 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#48 0x00007fea7eaf5935 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#49 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#50 0x00007fea7eaf299c in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#51 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#52 0x00007fea7eae16f4 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#53 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#54 0x00007fea89500fa0 in KWin::Effect::paintScreen ()
   from /usr/lib/libkwineffects.so.1
#55 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#56 0x00007fea7eae4185 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#57 0x00007fea89d37180 in ?? () from /usr/lib/libkdeinit4_kwin.so
#58 0x00007fea89d25f84 in ?? () from /usr/lib/libkdeinit4_kwin.so
#59 0x00007fea89d302f4 in ?? () from /usr/lib/libkdeinit4_kwin.so
#60 0x00007fea89d221b4 in ?? () from /usr/lib/libkdeinit4_kwin.so
#61 0x00007fea89cc66b2 in ?? () from /usr/lib/libkdeinit4_kwin.so
#62 0x00007fea88dc5134 in QMetaObject::activate ()
   from /usr/lib/libQtCore.so.4
#63 0x00007fea88dbfa43 in QObject::event () from /usr/lib/libQtCore.so.4
#64 0x00007fea87994c3d in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#65 0x00007fea8799c9ea in QApplication::notify () from /usr/lib/libQtGui.so.4
#66 0x00007fea86764fcb in KApplication::notify (this=0x7fff92178680, 
    receiver=0x1c4a638, event=0x7fff92178310)
    at /build/buildd/kde4libs-4.1.3/kdeui/kernel/kapplication.cpp:311
#67 0x00007fea88db0d61 in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
#68 0x00007fea88ddcab6 in ?? () from /usr/lib/libQtCore.so.4
#69 0x00007fea88dd91fd in ?? () from /usr/lib/libQtCore.so.4
#70 0x00007fea8526dd3b in IA__g_main_context_dispatch (context=0x1b9d4b0)
    at /build/buildd/glib2.0-2.18.2/glib/gmain.c:2144
#71 0x00007fea8527150d in g_main_context_iterate (context=0x1b9d4b0, block=1, 
    dispatch=1, self=<value optimized out>)
    at /build/buildd/glib2.0-2.18.2/glib/gmain.c:2778
#72 0x00007fea852716cb in IA__g_main_context_iteration (context=0x1b9d4b0, 
    may_block=1) at /build/buildd/glib2.0-2.18.2/glib/gmain.c:2841
#73 0x00007fea88dd915f in QEventDispatcherGlib::processEvents ()
   from /usr/lib/libQtCore.so.4
#74 0x00007fea87a26a9f in ?? () from /usr/lib/libQtGui.so.4
#75 0x00007fea88daf682 in QEventLoop::processEvents ()
   from /usr/lib/libQtCore.so.4
#76 0x00007fea88daf80d in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#77 0x00007fea88db1cbd in QCoreApplication::exec ()
   from /usr/lib/libQtCore.so.4
#78 0x00007fea89cdf761 in kdemain () from /usr/lib/libkdeinit4_kwin.so
#79 0x00007fea8994c466 in __libc_start_main () from /lib/libc.so.6
#80 0x0000000000400659 in _start ()
#0  0x00007fea899d65f0 in __nanosleep_nocancel () from /lib/libc.so.6