Application: kontact (4.10.2)
KDE Platform Version: 4.10.2
Qt Version: 4.8.4
Operating System: Linux 3.8.0-22-generic x86_64
Distribution: Ubuntu 13.04

-- Information about the crash:
- What I was doing when the application crashed:
1: open kontact.
2: create new to-do. but can't save
3: close create new to-do dialog,
4: close kontact.
5: crash report.

The crash can be reproduced every time.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f7db6c9a7c0 (LWP 3377))]

Thread 3 (Thread 0x7f7d96528700 (LWP 3378)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7db3420585 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f7db34205d9 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f7dade76f8e in start_thread (arg=0x7f7d96528700) at pthread_create.c:311
#4  0x00007f7db4218e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7f7d55d25700 (LWP 3379)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f7db3166a09 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f7db344ecee in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f7dade76f8e in start_thread (arg=0x7f7d55d25700) at pthread_create.c:311
#4  0x00007f7db4218e1d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7f7db6c9a7c0 (LWP 3377)):
[KCrash Handler]
#6  __glXGenerateError (dpy=dpy@entry=0x0, resource=resource@entry=0, errorCode=errorCode@entry=8 '\b', minorCode=26) at glxcurrent.c:197
#7  0x00007f7daa360607 in MakeContextCurrent (dpy=0x0, draw=0, read=0, gc_user=0x1c30a0c0) at glxcurrent.c:240
#8  0x00007f7daa649929 in QGLContext::makeCurrent (this=0x1c2fbfb0) at qgl_x11.cpp:934
#9  0x00007f7daa62540a in QGLShareContextScope (ctx=0x1c2fbfb0, this=<synthetic pointer>) at ../../include/QtOpenGL/private/../../../src/opengl/qgl_p.h:493
#10 ~QGLContextGroupResource (this=0x2eb7760, __in_chrg=<optimized out>) at ../../include/QtOpenGL/private/../../../src/opengl/qgl_p.h:768
#11 QGLContextGroupResource<QGLEngineSharedShaders>::~QGLContextGroupResource (this=0x2eb7760, __in_chrg=<optimized out>) at ../../include/QtOpenGL/private/../../../src/opengl/qgl_p.h:772
#12 0x00007f7db5510be8 in QThreadStorageData::finish (p=0x90e6f8) at thread/qthreadstorage.cpp:203
#13 0x00007f7db561286f in QCoreApplicationPrivate::~QCoreApplicationPrivate (this=0x953fe0, __in_chrg=<optimized out>) at kernel/qcoreapplication.cpp:470
#14 0x00007f7db49b4b49 in QApplicationPrivate::~QApplicationPrivate (this=0x953fe0, __in_chrg=<optimized out>) at kernel/qapplication.cpp:226
#15 0x00007f7db5628f9c in cleanup (pointer=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:62
#16 ~QScopedPointer (this=0x7fff10e3c988, __in_chrg=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qscopedpointer.h:100
#17 QObject::~QObject (this=0x7fff10e3c980, __in_chrg=<optimized out>) at kernel/qobject.cpp:816
#18 0x00007f7db49bd071 in QApplication::~QApplication (this=0x7fff10e3c980, __in_chrg=<optimized out>) at kernel/qapplication.cpp:1103
#19 0x000000000040341e in main (argc=1, argv=0x7fff10e3cac8) at ../../../kontact/src/main.cpp:222

Reported using DrKonqi