Application: ksmserver (0.4)
KDE Platform Version: 4.4.1 (KDE 4.4.1)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-ARCH i686
Distribution (Platform): Archlinux Packages

-- Information about the crash:
since kde sc 4.4 plasma just keep failing when it comes to matter of themes, changing themes and themes details is just a bad voodoo in this release

PS i've got screen glitches too (nothing in that area in 4.3 to complain)

arch 2.6.32, xf86-video-ati 6.12.4-3, xorg 1.7.5.901-2

The crash can be reproduced some of the time.

 -- Backtrace:
Application: The KDE Session Manager (kdeinit4), signal: Bus error
[KCrash Handler]
#6  0xb6fdbe0f in KPixmapCache::Private::mmapFile(QString const&, KPixmapCache::Private::MmapInfo*, int) () from /usr/lib/libkdeui.so.5
#7  0xb6fdd8e3 in KPixmapCache::Private::mmapFiles() () from /usr/lib/libkdeui.so.5
#8  0xb6fdcaca in KPixmapCache::recreateCacheFiles() () from /usr/lib/libkdeui.so.5
#9  0xb6fdcfdd in KPixmapCache::Private::checkFileVersion(QString const&) () from /usr/lib/libkdeui.so.5
#10 0xb6fdd5bf in KPixmapCache::Private::init() () from /usr/lib/libkdeui.so.5
#11 0xb6fdd6e6 in KPixmapCache::ensureInited() const () from /usr/lib/libkdeui.so.5
#12 0xb6fdd7b2 in KPixmapCache::timestamp() const () from /usr/lib/libkdeui.so.5
#13 0xb508349e in Plasma::ThemePrivate::setThemeName(QString const&, bool) () from /usr/lib/libplasma.so.3
#14 0xb5083d57 in Plasma::Theme::settingsChanged() () from /usr/lib/libplasma.so.3
#15 0xb5084b09 in Plasma::ThemePrivate::settingsFileChanged(QString const&) () from /usr/lib/libplasma.so.3
#16 0xb5084ef0 in Plasma::Theme::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libplasma.so.3
#17 0xb6c73eba in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#18 0xb6c8247f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#19 0xb7225493 in KDirWatch::created(QString const&) () from /usr/lib/libkio.so.5
#20 0xb7225d34 in KDirWatch::setCreated(QString const&) () from /usr/lib/libkio.so.5
#21 0xb7225e85 in KDirWatch::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkio.so.5
#22 0xb6c73eba in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
#23 0xb6c7e3a6 in QMetaCallEvent::placeMetaCall(QObject*) () from /usr/lib/libQtCore.so.4
#24 0xb6c7f4de in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#25 0xb61bc5dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#26 0xb61c31ee in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#27 0xb6f4f05a in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#28 0xb6c6ecbb in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#29 0xb6c71693 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#30 0xb6c717fd in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr/lib/libQtCore.so.4
#31 0xb6c9aadf in ?? () from /usr/lib/libQtCore.so.4
#32 0xb59ae378 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#33 0xb59b1bf0 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#34 0xb59b1d23 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#35 0xb6c9a5d5 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#36 0xb6278ae5 in ?? () from /usr/lib/libQtGui.so.4
#37 0xb6c6d2f9 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#38 0xb6c6d74a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#39 0xb6c718bf in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#40 0xb61bc677 in QApplication::exec() () from /usr/lib/libQtGui.so.4
#41 0xb36fba63 in kdemain () from /usr/lib/libkdeinit4_ksmserver.so
#42 0x0804db12 in _start ()

Reported using DrKonqi