Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.00 (KDE 4.3.0)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-14-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
I configured the microblog plasmoid with my Twitter account information and saved it. I noticed that none of my friends were showing in the feed, so I tried to configure it again by disabling the "show friends" option. After applying the changes, plasma crashed. It can be reproduced every time.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 5225)]

Thread 2 (Thread 0xa8307b90 (LWP 5229)):
#0  0xb7fd4430 in __kernel_vsyscall ()
#1  0xb64ed0e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb66cd2ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7dcf172 in QWaitCondition::wait (this=0xa1c7cb0, mutex=0xa1c7cac, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb770fac2 in QHostInfoAgent::run (this=0xa1c7ca0) at kernel/qhostinfo.cpp:260
#5  0xb7dce132 in QThreadPrivate::start (arg=0xa1c7ca0) at thread/qthread_unix.cpp:188
#6  0xb64e94ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb66be49e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb5ff7a10 (LWP 5225)):
[KCrash Handler]
#6  KConfigGroup::writeEntry (this=0xbfdefd24, key=0xa7b044e6 "password", value=@0xbfdefc9c, flags={i = -1075905384}) at /usr/include/qt4/QtCore/qshareddata.h:187
#7  0xb7bbfa7d in KConfigGroup::writeEntry (this=0xbfdefd24, key=0xa7b044e6 "password", value=@0xa52a648, flags={i = -1075905212}) at /build/buildd/kde4libs-4.3.0/kdecore/config/kconfiggroup.cpp:904
#8  0xa7afb0fc in MicroBlog::downloadHistory (this=0xa52a5e8) at /build/buildd/kdeplasma-addons-4.3.0/applets/microblog/microblog.cpp:832
#9  0xa7b00822 in MicroBlog::configAccepted (this=0xa52a5e8) at /build/buildd/kdeplasma-addons-4.3.0/applets/microblog/microblog.cpp:703
#10 0xa7b01953 in MicroBlog::qt_metacall (this=0xa52a5e8, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbfdefec8)
    at /build/buildd/kdeplasma-addons-4.3.0/obj-i486-linux-gnu/applets/microblog/microblog.moc:96
#11 0xb7ed81b8 in QMetaObject::activate (sender=0xa830b18, from_signal_index=45, to_signal_index=45, argv=0x0) at kernel/qobject.cpp:3113
#12 0xb7ed8e42 in QMetaObject::activate (sender=0xa830b18, m=0xb763c144, local_signal_index=9, argv=0x0) at kernel/qobject.cpp:3187
#13 0xb73fa3d7 in KDialog::okClicked (this=0xa830b18) at /build/buildd/kde4libs-4.3.0/obj-i486-linux-gnu/kdeui/kdialog.moc:252
#14 0xb73fcc18 in KDialog::slotButtonClicked (this=0xa830b18, button=4) at /build/buildd/kde4libs-4.3.0/kdeui/dialogs/kdialog.cpp:854
#15 0xb73fee2c in KDialog::qt_metacall (this=0xa830b18, _c=QMetaObject::InvokeMetaMethod, _id=33, _a=0xbfdf00bc) at /build/buildd/kde4libs-4.3.0/obj-i486-linux-gnu/kdeui/kdialog.moc:184
#16 0xb74c572a in KPageDialog::qt_metacall (this=0xa830b18, _c=QMetaObject::InvokeMetaMethod, _id=69, _a=0xbfdf00bc) at /build/buildd/kde4libs-4.3.0/obj-i486-linux-gnu/kdeui/kpagedialog.moc:64
#17 0xb73e991a in KConfigDialog::qt_metacall (this=0xa830b18, _c=QMetaObject::InvokeMetaMethod, _id=69, _a=0xbfdf00bc) at /build/buildd/kde4libs-4.3.0/obj-i486-linux-gnu/kdeui/kconfigdialog.moc:78
#18 0xb7ed81b8 in QMetaObject::activate (sender=0xa851188, from_signal_index=4, to_signal_index=4, argv=0xbfdf00bc) at kernel/qobject.cpp:3113
#19 0xb7ed8e42 in QMetaObject::activate (sender=0xa851188, m=0xb7fb4878, local_signal_index=0, argv=0xbfdf00bc) at kernel/qobject.cpp:3187
#20 0xb7edbab3 in QSignalMapper::mapped (this=0xa851188, _t1=4) at .moc/release-shared/moc_qsignalmapper.cpp:95
#21 0xb7edc33d in QSignalMapper::map (this=0xa851188, sender=0xa6f1e70) at kernel/qsignalmapper.cpp:266
#22 0xb7edc52e in QSignalMapper::map (this=0xa851188) at kernel/qsignalmapper.cpp:257
#23 0xb7edcdfb in QSignalMapper::qt_metacall (this=0xa851188, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0xbfdf023c) at .moc/release-shared/moc_qsignalmapper.cpp:81
#24 0xb7ed81b8 in QMetaObject::activate (sender=0xa6f1e70, from_signal_index=29, to_signal_index=30, argv=0xbfdf023c) at kernel/qobject.cpp:3113
#25 0xb7ed85f0 in QMetaObject::activate (sender=0xa6f1e70, m=0xb71fe0a4, from_local_signal_index=2, to_local_signal_index=3, argv=0xbfdf023c) at kernel/qobject.cpp:3207
#26 0xb7014f91 in QAbstractButton::clicked (this=0xa6f1e70, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:200
#27 0xb6d3c3e9 in QAbstractButtonPrivate::emitClicked (this=0xaaa75f0) at widgets/qabstractbutton.cpp:543
#28 0xb6d3e044 in QAbstractButtonPrivate::click (this=0xaaa75f0) at widgets/qabstractbutton.cpp:536
#29 0xb6d3e2d6 in QAbstractButton::mouseReleaseEvent (this=0xa6f1e70, e=0xbfdf0818) at widgets/qabstractbutton.cpp:1115
#30 0xb69da973 in QWidget::event (this=0xa6f1e70, event=0xbfdf0818) at kernel/qwidget.cpp:7549
#31 0xb6d3c28e in QAbstractButton::event (this=0xa6f1e70, e=0xbfdf0818) at widgets/qabstractbutton.cpp:1077
#32 0xb6de7050 in QPushButton::event (this=0xa6f1e70, e=0xbfdf0818) at widgets/qpushbutton.cpp:662
#33 0xb6983d3c in QApplicationPrivate::notify_helper (this=0x9d22d68, receiver=0xa6f1e70, e=0xbfdf0818) at kernel/qapplication.cpp:4056
#34 0xb698c9b1 in QApplication::notify (this=0x9d1d278, receiver=0xa6f1e70, e=0xbfdf0818) at kernel/qapplication.cpp:3758
#35 0xb74945cd in KApplication::notify (this=0x9d1d278, receiver=0xa6f1e70, event=0xbfdf0818) at /build/buildd/kde4libs-4.3.0/kdeui/kernel/kapplication.cpp:302
#36 0xb7ec2bcb in QCoreApplication::notifyInternal (this=0x9d1d278, receiver=0xa6f1e70, event=0xbfdf0818) at kernel/qcoreapplication.cpp:610
#37 0xb698ba1e in QApplicationPrivate::sendMouseEvent (receiver=0xa6f1e70, event=0xbfdf0818, alienWidget=0xa6f1e70, nativeWidget=0xa830b18, buttonDown=0xb7205aa0, lastMouseReceiver=@0xb7205aa4)
    at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#38 0xb69fbcce in QETWidget::translateMouseEvent (this=0xa830b18, event=0xbfdf1eac) at kernel/qapplication_x11.cpp:4409
#39 0xb69fb085 in QApplication::x11ProcessEvent (this=0x9d1d278, event=0xbfdf1eac) at kernel/qapplication_x11.cpp:3428
#40 0xb6a2637a in x11EventSourceDispatch (s=0x9d25c00, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#41 0xb6536b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#42 0xb653a0eb in ?? () from /usr/lib/libglib-2.0.so.0
#43 0xb653a268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#44 0xb7eee2f8 in QEventDispatcherGlib::processEvents (this=0x9d22a80, flags={i = -1075896216}) at kernel/qeventdispatcher_glib.cpp:327
#45 0xb6a25a75 in QGuiEventDispatcherGlib::processEvents (this=0x9d22a80, flags={i = -1075896168}) at kernel/qguieventdispatcher_glib.cpp:202
#46 0xb7ec11fa in QEventLoop::processEvents (this=0xbfdf2110, flags={i = -1075896104}) at kernel/qeventloop.cpp:149
#47 0xb7ec1642 in QEventLoop::exec (this=0xbfdf2110, flags={i = -1075896040}) at kernel/qeventloop.cpp:201
#48 0xb7ec3ae9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#49 0xb6983bb7 in QApplication::exec () at kernel/qapplication.cpp:3525
#50 0xb3be95d0 in kdemain (argc=1, argv=0x9d0a278) at /build/buildd/kdebase-workspace-4.3.0/plasma/shells/desktop/main.cpp:50
#51 0x0804e27d in launch (argc=1, _name=0x9ca857c "/usr/bin/plasma-desktop", args=0x9ca8594 "", cwd=0x0, envc=0, envs=0x9ca8598 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x805136d "0") at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:676
#52 0x0804ea5d in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:1168
#53 0x0804efe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:1361
#54 0x0804fbca in main (argc=2, argv=0xbfdf2904, envp=0xbfdf2910) at /build/buildd/kde4libs-4.3.0/kinit/kinit.cpp:1788

This bug may be a duplicate of or related to bug 200757

Reported using DrKonqi