Application: plasma-desktop (0.3)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-18-generic i686
Distribution: Ubuntu lucid (development branch)

-- Information about the crash:
This has happened twice today - I selected a browser window (konqueror) to show from the task bar, and it crashed.

Note that I am running KDE 4.4.2 on Kubuntu Lucid (10.04).

The crash can be reproduced some of the time.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Aborted
[Current thread is 1 (Thread 0xb7792aa0 (LWP 2636))]

Thread 2 (Thread 0xa9ee8b70 (LWP 2647)):
#0  0x00978422 in __kernel_vsyscall ()
#1  0x01b78cc3 in ?? () from /lib/tls/i686/cmov/libc.so.6
#2  0x01b0f687 in ?? () from /lib/tls/i686/cmov/libc.so.6
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 1 (Thread 0xb7792aa0 (LWP 2636)):
[KCrash Handler]
#6  0x00978422 in __kernel_vsyscall ()
#7  0x01ac8641 in raise () from /lib/tls/i686/cmov/libc.so.6
#8  0x01acba72 in abort () from /lib/tls/i686/cmov/libc.so.6
#9  0x01b09784 in ?? () from /lib/tls/i686/cmov/libc.so.6
#10 0x01b0c436 in ?? () from /lib/tls/i686/cmov/libc.so.6
#11 0x01b0df8c in malloc () from /lib/tls/i686/cmov/libc.so.6
#12 0x0038e601 in ?? () from /lib/libz.so.1
#13 0x0038aa89 in deflateInit2_ () from /lib/libz.so.1
#14 0x0038ac02 in deflateInit_ () from /lib/libz.so.1
#15 0x00386f2d in compress2 () from /lib/libz.so.1
#16 0x00622085 in qCompress (
    data=0x9c1ec08 "\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377\001\001\001\377"..., nbytes=29162014, compressionLevel=-1) at tools/qbytearray.cpp:467
#17 0x00fed0ad in KPixmapCache::Private::writeData (this=0x91d1bb8, key=..., pix=...) at ../../kdeui/util/kpixmapcache.cpp:1475
#18 0x00fede1e in KPixmapCache::insert (this=0x91c65e8, key=..., pix=...) at ../../kdeui/util/kpixmapcache.cpp:1440
#19 0x0832ecea in Plasma::ThemePrivate::scheduledCacheUpdate (this=0x91ca9c0) at ../../plasma/theme.cpp:242
#20 0x083330a6 in Plasma::Theme::qt_metacall (this=0x91c3bf0, _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0xbfa952dc) at ./theme.moc:111
#21 0x00723c9a in QMetaObject::metacall (object=0x91c3bf0, cl=2636, idx=9, argv=0xbfa952dc) at kernel/qmetaobject.cpp:237
#22 0x007323d5 in QMetaObject::activate (sender=0x91cd3c8, m=0x8325a4, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3293
#23 0x00783aa7 in QTimer::timeout (this=0x91cd3c8) at .moc/release-shared/moc_qtimer.cpp:134
#24 0x0073a60e in QTimer::timerEvent (this=0x91cd3c8, e=0xbfa95810) at kernel/qtimer.cpp:271
#25 0x0072f254 in QObject::event (this=0x91cd3c8, e=0x6) at kernel/qobject.cpp:1212
#26 0x048a44dc in QApplicationPrivate::notify_helper (this=0x9111560, receiver=0x91cd3c8, e=0xbfa95810) at kernel/qapplication.cpp:4300
#27 0x048ab05e in QApplication::notify (this=0x910b450, receiver=0x91cd3c8, e=0xbfa95810) at kernel/qapplication.cpp:3704
#28 0x00f5bf2a in KApplication::notify (this=0x910b450, receiver=0x91cd3c8, event=0xbfa95810) at ../../kdeui/kernel/kapplication.cpp:302
#29 0x0071ea3b in QCoreApplication::notifyInternal (this=0x910b450, receiver=0x91cd3c8, event=0xbfa95810) at kernel/qcoreapplication.cpp:704
#30 0x0074dd66 in QCoreApplication::sendEvent (this=0x9113e9c) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#31 QTimerInfoList::activateTimers (this=0x9113e9c) at kernel/qeventdispatcher_unix.cpp:603
#32 0x0074a8e4 in timerSourceDispatch (source=0x9113e68) at kernel/qeventdispatcher_glib.cpp:184
#33 0x014b25e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#34 0x014b62d8 in ?? () from /lib/libglib-2.0.so.0
#35 0x014b64b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#36 0x0074a5d5 in QEventDispatcherGlib::processEvents (this=0x9111408, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#37 0x04963fd5 in QGuiEventDispatcherGlib::processEvents (this=0x9111408, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#38 0x0071d059 in QEventLoop::processEvents (this=0xbfa95ad4, flags=) at kernel/qeventloop.cpp:149
#39 0x0071d4aa in QEventLoop::exec (this=0xbfa95ad4, flags=...) at kernel/qeventloop.cpp:201
#40 0x0072169f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#41 0x048a4577 in QApplication::exec () at kernel/qapplication.cpp:3579
#42 0x0780c19e in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#43 0x0804e133 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x90e1fc0 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8051465 "0") at ../../kinit/kinit.cpp:717
#44 0x0804ec6d in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1209
#45 0x0804f190 in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1402
#46 0x0804fe4f in main (argc=4, argv=0xbfa96584, envp=0xbfa96598) at ../../kinit/kinit.cpp:1845

Reported using DrKonqi