Version:            (using KDE 4.2.0)
Installed from:    Fedora RPMs

Pretty much repeatable.  Whenever I start apps too quickly at login

Application: Plasma Workspace (plasma), signal SIGSEGV
0x0000003840aa7f81 in nanosleep () from /lib64/libc.so.6
[Current thread is 1 (Thread 0x7fd2db716840 (LWP 3243))]

Thread 3 (Thread 0x7fd2c75cc950 (LWP 3290)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x000000386825a839 in QWaitConditionPrivate::wait () at thread/qwaitcondition_unix.cpp:82
#2  QWaitCondition::wait (this=0x1a39290, mutex=0x1a39288, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:154
#3  0x000000386a072eac in QHostInfoAgent::run (this=0x1a39270) at kernel/qhostinfo.cpp:241
#4  0x0000003868259852 in QThreadPrivate::start (arg=0x1a39270) at thread/qthread_unix.cpp:185
#5  0x00000038416073da in start_thread (arg=<value optimized out>) at pthread_create.c:297
#6  0x0000003840ae62bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112

Thread 2 (Thread 0x7fd2c63a5950 (LWP 3291)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x000000386825a839 in QWaitConditionPrivate::wait () at thread/qwaitcondition_unix.cpp:82
#2  QWaitCondition::wait (this=0x1807d90, mutex=0x1807d88, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:154
#3  0x00007fd2c7c11fa0 in ?? () from /usr/lib64/kde4/plasma_wallpaper_image.so
#4  0x0000003868259852 in QThreadPrivate::start (arg=0x1807d78) at thread/qthread_unix.cpp:185
#5  0x00000038416073da in start_thread (arg=<value optimized out>) at pthread_create.c:297
#6  0x0000003840ae62bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
Current language:  auto; currently asm

Thread 1 (Thread 0x7fd2db716840 (LWP 3243)):
[KCrash Handler]
#5  0x00007fd2c8aecb93 in TaskManager::GroupManager::add () from /usr/lib64/libtaskmanager.so.4
#6  0x00007fd2c8aee51b in TaskManager::GroupManager::qt_metacall () from /usr/lib64/libtaskmanager.so.4
#7  0x0000003868356764 in QMetaObject::activate (sender=0x1796860, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x1c72e20) at kernel/qobject.cpp:3031
#8  0x00007fd2c8b02bf2 in TaskManager::TaskManager::taskAdded () from /usr/lib64/libtaskmanager.so.4
#9  0x00007fd2c8b04c3f in TaskManager::TaskManager::windowAdded () from /usr/lib64/libtaskmanager.so.4
#10 0x00007fd2c8b05c2f in TaskManager::TaskManager::qt_metacall () from /usr/lib64/libtaskmanager.so.4
#11 0x0000003868356764 in QMetaObject::activate (sender=0x146ff00, from_signal_index=<value optimized out>, to_signal_index=5, argv=0x1c72e20) at kernel/qobject.cpp:3031
#12 0x0000003deff26e52 in KWindowSystem::windowAdded () from /usr/lib64/libkdeui.so.5
#13 0x0000003deff291ac in ?? () from /usr/lib64/libkdeui.so.5
#14 0x0000003deff381b8 in NETRootInfo::update () from /usr/lib64/libkdeui.so.5
#15 0x0000003deff3852b in NETRootInfo::event () from /usr/lib64/libkdeui.so.5
#16 0x0000003deff2962b in ?? () from /usr/lib64/libkdeui.so.5
#17 0x0000003defe04203 in KApplication::x11EventFilter () from /usr/lib64/libkdeui.so.5
#18 0x0000003df1841d34 in ?? () from /usr/lib64/libkdeinit4_plasma.so
#19 0x0000003deeddb49f in qt_x11EventFilter (ev=0x7fffe377d830) at kernel/qapplication_x11.cpp:361
#20 0x0000003deedecb56 in QApplication::x11ProcessEvent (this=0x13514d0, event=0x7fffe377d830) at kernel/qapplication_x11.cpp:2922
#21 0x0000003deee13ae4 in x11EventSourceDispatch (s=0x1369300, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:142
#22 0x000000386763779b in g_main_dispatch () at gmain.c:2144
#23 IA__g_main_context_dispatch (context=0x1368520) at gmain.c:2697
#24 0x000000386763af6d in g_main_context_iterate (context=0x1368520, block=1, dispatch=1, self=<value optimized out>) at gmain.c:2778
#25 0x000000386763b12b in IA__g_main_context_iteration (context=0x1368520, may_block=1) at gmain.c:2841
#26 0x000000386836a79f in QEventDispatcherGlib::processEvents (this=0x1365550, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:319
#27 0x0000003deee1328f in QGuiEventDispatcherGlib::processEvents (this=0x1ddc790, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:198
#28 0x0000003868340cb2 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:143
#29 0x0000003868340e3d in QEventLoop::exec (this=0x7fffe377db60, flags=) at kernel/qeventloop.cpp:194
#30 0x00000038683432ed in QCoreApplication::exec () at kernel/qcoreapplication.cpp:845
#31 0x0000003df18339bb in kdemain () from /usr/lib64/libkdeinit4_plasma.so
#32 0x0000003840a1e576 in __libc_start_main (main=0x400830 <_start+240>, argc=1, ubp_av=0x7fffe377de68, init=0x400860 <__libc_csu_init>, fini=<value optimized out>, rtld_fini=<value optimized out>, 
    stack_end=0x7fffe377de58) at libc-start.c:220
#33 0x0000000000400769 in _start ()
Current language:  auto; currently c