Version:           0.3 (using KDE 4.2.2)
Compiler:          4.3.3 
OS:                Linux
Installed from:    Ubuntu Packages

This happened right after a fresh boot. The system was still loading stuff. It had just loaded firefox. As soon as I opened Dolphin, plasma crashed. I'm not sure if they're related. Here is the back trace.

Application: Plasma Workspace (plasma), signal SIGSEGV
[Current thread is 0 (LWP 12741)]

Thread 3 (Thread 0xa85a0b90 (LWP 12742)):
#0  0xb8009430 in __kernel_vsyscall ()
#1  0xb513e0e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb634d2ed in __pthread_cond_wait (cond=0x8fd54b8, mutex=0x8fd54a0) at forward.c:139
#3  0xb65399b2 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#4  0xb79bb152 in ?? () from /usr/lib/libQtNetwork.so.4
#5  0xb653896e in ?? () from /usr/lib/libQtCore.so.4
#6  0xb513a4ff in start_thread (arg=0xa85a0b90) at pthread_create.c:297
#7  0xb633e49e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 2 (Thread 0xa7d6bb90 (LWP 12743)):
#0  0xb8009430 in __kernel_vsyscall ()
#1  0xb513e0e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb634d2ed in __pthread_cond_wait (cond=0x8ef9400, mutex=0x8ef93e8) at forward.c:139
#3  0xb65399b2 in QWaitCondition::wait () from /usr/lib/libQtCore.so.4
#4  0xa86f5b9a in ?? () from /usr/lib/kde4/plasma_wallpaper_image.so
#5  0xb653896e in ?? () from /usr/lib/libQtCore.so.4
#6  0xb513a4ff in start_thread (arg=0xa7d6bb90) at pthread_create.c:297
#7  0xb633e49e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

Thread 1 (Thread 0xb3d24730 (LWP 12741)):
[KCrash Handler]
#6  0xa88d6be2 in TaskManager::GroupManager::add () from /usr/lib/libtaskmanager.so.4
#7  0xa88d8c7f in TaskManager::GroupManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#8  0xb6642ca8 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#9  0xb6643932 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#10 0xa88f14d3 in TaskManager::TaskManager::taskAdded () from /usr/lib/libtaskmanager.so.4
#11 0xa88f3786 in TaskManager::TaskManager::windowAdded () from /usr/lib/libtaskmanager.so.4
#12 0xa88f485c in TaskManager::TaskManager::qt_metacall () from /usr/lib/libtaskmanager.so.4
#13 0xb6642ca8 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#14 0xb6643932 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#15 0xb787c4c3 in KWindowSystem::windowAdded () from /usr/lib/libkdeui.so.5
#16 0xb787eb79 in ?? () from /usr/lib/libkdeui.so.5
#17 0xb788e207 in NETRootInfo::update () from /usr/lib/libkdeui.so.5
#18 0xb788e5bf in NETRootInfo::event () from /usr/lib/libkdeui.so.5
#19 0xb787ef8d in ?? () from /usr/lib/libkdeui.so.5
#20 0xb7731c69 in KApplication::x11EventFilter () from /usr/lib/libkdeui.so.5
#21 0xb7fbb4d7 in ?? () from /usr/lib/libkdeinit4_plasma.so
#22 0xb693cfce in ?? () from /usr/lib/libQtGui.so.4
#23 0xb694f738 in QApplication::x11ProcessEvent () from /usr/lib/libQtGui.so.4
#24 0xb697bcfa in ?? () from /usr/lib/libQtGui.so.4
#25 0xb4f38b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#26 0xb4f3c0eb in ?? () from /usr/lib/libglib-2.0.so.0
#27 0xb4f3c268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#28 0xb6658438 in QEventDispatcherGlib::processEvents () from /usr/lib/libQtCore.so.4
#29 0xb697b3f5 in ?? () from /usr/lib/libQtGui.so.4
#30 0xb662b06a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#31 0xb662b4aa in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#32 0xb662d959 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#33 0xb68d9da7 in QApplication::exec () from /usr/lib/libQtGui.so.4
#34 0xb7fa8b56 in kdemain () from /usr/lib/libkdeinit4_plasma.so
#35 0x08048712 in _start ()