Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-17-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
I right-clicked a text file (actually a .css) in Dolphin and selected Open with... and selected UltraEdit (a proprietary text editor) and the Crash Reporting Assistant started. 

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb77ff700 (LWP 2005))]

Thread 2 (Thread 0xac713b70 (LWP 2010)):
#0  0x00a8e422 in __kernel_vsyscall ()
#1  0x0039be15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00c2387d in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x00495e67 in QWaitConditionPrivate::wait (this=0xa469e98, mutex=0xa469e94, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0xa469e98, mutex=0xa469e94, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0x02c32922 in QHostInfoAgent::run (this=0xa469e88) at kernel/qhostinfo.cpp:260
#6  0x00494e32 in QThreadPrivate::start (arg=0xa469e88) at thread/qthread_unix.cpp:188
#7  0x0039780e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0x00c168de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb77ff700 (LWP 2005)):
[KCrash Handler]
#6  Tasks::itemTopMargin (this=0xabc5d88) at ../../../../plasma/applets/tasks/tasks.h:92
#7  AbstractTaskItem::basicPreferredSize (this=0xabc5d88) at ../../../../plasma/applets/tasks/abstracttaskitem.cpp:102
#8  0x016c84eb in TaskItemLayout::preferredColumns (this=0xa148160) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:206
#9  0x016c923a in TaskItemLayout::gridLayoutSize (this=0xa148160) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:222
#10 0x016c92fb in TaskItemLayout::layoutItems (this=0xa148160) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:245
#11 0x016c9e2a in TaskItemLayout::insert (this=0xa148160, index=6, item=0xabc24e8) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:125
#12 0x016ca00f in TaskItemLayout::addTaskItem (this=0xa148160, item=0xabc24e8) at ../../../../plasma/applets/tasks/taskitemlayout.cpp:82
#13 0x016d6fa2 in TaskGroupItem::itemAdded (this=0xa3a12a0, groupableItem=0xabd7fe0) at ../../../../plasma/applets/tasks/taskgroupitem.cpp:477
#14 0x016d7627 in TaskGroupItem::qt_metacall (this=0xa3a12a0, _c=QMetaObject::InvokeMetaMethod, _id=29, _a=0xbf842988) at ./taskgroupitem.moc:113
#15 0x0059b263 in QMetaObject::activate (sender=0xa3a1200, from_signal_index=21, to_signal_index=21, argv=0xbf842988) at kernel/qobject.cpp:3113
#16 0x0059bec2 in QMetaObject::activate (sender=0xa3a1200, m=0x1748bf4, local_signal_index=0, argv=0xbf842988) at kernel/qobject.cpp:3187
#17 0x0173a433 in TaskManager::TaskGroup::itemAdded (this=0xa3a1200, _t1=0xabd7fe0) at ./taskgroup.moc:145
#18 0x0173ae8b in TaskManager::TaskGroup::add (this=0xa3a1200, item=0xabd7fe0) at ../../../libs/taskmanager/taskgroup.cpp:138
#19 0x0172362e in TaskManager::GroupManagerPrivate::addStartup (this=0xa266af0, task=...) at ../../../libs/taskmanager/groupmanager.cpp:176
#20 0x01724563 in TaskManager::GroupManager::qt_metacall (this=0xa147bb0, _c=QMetaObject::InvokeMetaMethod, _id=12, _a=0xbf842b78) at ./groupmanager.moc:106
#21 0x0059b263 in QMetaObject::activate (sender=0xa13bcb8, from_signal_index=6, to_signal_index=6, argv=0xbf842b78) at kernel/qobject.cpp:3113
#22 0x0059bec2 in QMetaObject::activate (sender=0xa13bcb8, m=0x1748dbc, local_signal_index=2, argv=0xbf842b78) at kernel/qobject.cpp:3187
#23 0x0173dde3 in TaskManager::TaskManager::startupAdded (this=0xa13bcb8, _t1=...) at ./taskmanager.moc:169
#24 0x0173eb8d in TaskManager::TaskManager::gotNewStartup (this=0xa13bcb8, id=..., data=...) at ../../../libs/taskmanager/taskmanager.cpp:392
#25 0x017415e4 in TaskManager::TaskManager::qt_metacall (this=0xa13bcb8, _c=QMetaObject::InvokeMetaMethod, _id=13, _a=0xbf842d04) at ./taskmanager.moc:116
#26 0x0059b263 in QMetaObject::activate (sender=0xa267200, from_signal_index=4, to_signal_index=4, argv=0xbf842d04) at kernel/qobject.cpp:3113
#27 0x0059bec2 in QMetaObject::activate (sender=0xa267200, m=0x12eef90, local_signal_index=0, argv=0xbf842d04) at kernel/qobject.cpp:3187
#28 0x0115eaf9 in KStartupInfo::gotNewStartup (this=0xa267200, _t1=..., _t2=...) at ./kstartupinfo.moc:100
#29 0x0116469f in KStartupInfo::Private::new_startup_info_internal (this=0xa1f8250, id_P=..., data_P=..., update_P=false) at ../../kdeui/kernel/kstartupinfo.cpp:346
#30 0x01164989 in KStartupInfo::Private::got_startup_info (this=0xa1f8250, msg_P=..., update_P=<value optimized out>) at ../../kdeui/kernel/kstartupinfo.cpp:299
#31 0x01169669 in KStartupInfo::Private::got_message (this=0xa1f8250, msg_P=...) at ../../kdeui/kernel/kstartupinfo.cpp:228
#32 0x01169868 in KStartupInfo::qt_metacall (this=0xa267200, _c=QMetaObject::InvokeMetaMethod, _id=9, _a=0xbf842fc8) at ./kstartupinfo.moc:86
#33 0x0059b263 in QMetaObject::activate (sender=0xa1f8264, from_signal_index=27, to_signal_index=27, argv=0xbf842fc8) at kernel/qobject.cpp:3113
#34 0x0059bec2 in QMetaObject::activate (sender=0xa1f8264, m=0x12f17c4, local_signal_index=0, argv=0xbf842fc8) at kernel/qobject.cpp:3187
#35 0x011ddcb3 in KXMessages::gotMessage (this=0xa1f8264, _t1=...) at ./kxmessages.moc:78
#36 0x011df237 in KXMessages::x11Event (this=0xa1f8264, ev_P=0xbf8446ac) at ../../kdeui/util/kxmessages.cpp:217
#37 0x0113ef86 in KAppX11HackWidget::publicx11Event (this=0x9eb8070, _event=0xbf8446ac) at ../../kdeui/kernel/kapplication.cpp:911
#38 KApplication::x11EventFilter (this=0x9eb8070, _event=0xbf8446ac) at ../../kdeui/kernel/kapplication.cpp:961
#39 0x04ced71a in PlasmaApp::x11EventFilter (this=0x9eb8070, event=0xbf8446ac) at ../../../../plasma/shells/desktop/plasmaapp.cpp:490
#40 0x0750ad70 in qt_x11EventFilter (ev=0xbf8446ac) at kernel/qapplication_x11.cpp:375
#41 0x0751c375 in QApplication::x11ProcessEvent (this=0x9eb8070, event=0xbf8446ac) at kernel/qapplication_x11.cpp:3271
#42 0x0754a502 in x11EventSourceDispatch (s=0x9ee1aa8, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#43 0x00a02e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#44 0x00a06730 in ?? () from /lib/libglib-2.0.so.0
#45 0x00a06863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#46 0x005b002c in QEventDispatcherGlib::processEvents (this=0x9edec58, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#47 0x07549be5 in QGuiEventDispatcherGlib::processEvents (this=0x9edec58, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#48 0x00583c79 in QEventLoop::processEvents (this=0xbf8449a4, flags=) at kernel/qeventloop.cpp:149
#49 0x005840ca in QEventLoop::exec (this=0xbf8449a4, flags=...) at kernel/qeventloop.cpp:201
#50 0x0058653f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#51 0x074a8dd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#52 0x04cd780d in kdemain (argc=1, argv=0x9e98748) at ../../../../plasma/shells/desktop/main.cpp:50
#53 0x0804dde1 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x9ea3e38 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x80511a5 "0") at ../../kinit/kinit.cpp:677
#54 0x0804ea35 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#55 0x0804eeac in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1362
#56 0x0804fbaf in main (argc=2, argv=0xbf845204, envp=0xbf845210) at ../../kinit/kinit.cpp:1793

This bug may be a duplicate of or related to bug 209853

Reported using DrKonqi