Version:           unspecified (using KDE 4.7.0) 
OS:                Linux

After update to KDE 4.7, plasma-desktop crashes on startup. Crash report:

Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[KCrash Handler]
#7  GroupingContainment::restoreContents (this=0x8c25638, group=...) at /mnt/sdb2/tmp/portage/kde-base/kdeplasma-addons-4.7.0/work/kdeplasma-addons-4.7.0/containments/groupingdesktop/lib/groupingcontainment.cpp:898
#8  0xb731bf5d in Plasma::Containment::restore (this=0x8c25638, group=...) at /mnt/sdb2/tmp/portage/kde-base/kdelibs-4.7.0/work/kdelibs-4.7.0/plasma/containment.cpp:340
#9  0xb732813b in Plasma::CoronaPrivate::importLayout (this=0x860f010, conf=..., mergeConfig=false) at /mnt/sdb2/tmp/portage/kde-base/kdelibs-4.7.0/work/kdelibs-4.7.0/plasma/corona.cpp:1058
#10 0xb732886f in Plasma::Corona::loadLayout (this=0x8507470, configName=...) at /mnt/sdb2/tmp/portage/kde-base/kdelibs-4.7.0/work/kdelibs-4.7.0/plasma/corona.cpp:278
#11 0xb73288fd in Plasma::Corona::initializeLayout (this=0x8507470, configName=...) at /mnt/sdb2/tmp/portage/kde-base/kdelibs-4.7.0/work/kdelibs-4.7.0/plasma/corona.cpp:181
#12 0xb769fd9d in PlasmaApp::corona (this=0x84fb040) at /mnt/sdb2/tmp/portage/kde-base/plasma-workspace-4.7.0/work/plasma-workspace-4.7.0/plasma/desktop/shell/plasmaapp.cpp:831
#13 0xb76a00b4 in PlasmaApp::setupDesktop (this=0x84fb040) at /mnt/sdb2/tmp/portage/kde-base/plasma-workspace-4.7.0/work/plasma-workspace-4.7.0/plasma/desktop/shell/plasmaapp.cpp:312
#14 0xb76a0cf5 in PlasmaApp::qt_metacall (this=0x84fb040, _c=QMetaObject::InvokeMetaMethod, _id=14, _a=0x85bbb78) at /mnt/sdb2/tmp/portage/kde-base/plasma-workspace-4.7.0/work/plasma-workspace-4.7.0_build/plasma/desktop/shell/plasmaapp.moc:142
#15 0xb6586771 in QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/qt4/libQtCore.so.4
#16 0xb659037c in QMetaCallEvent::placeMetaCall(QObject*) () from /usr/lib/qt4/libQtCore.so.4
#17 0xb65944e9 in QObject::event(QEvent*) () from /usr/lib/qt4/libQtCore.so.4
#18 0xb6580d6f in QCoreApplication::event(QEvent*) () from /usr/lib/qt4/libQtCore.so.4
#19 0xb5af91ee in QApplication::event(QEvent*) () from /usr/lib/qt4/libQtGui.so.4
#20 0xb5af6bdf in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/qt4/libQtGui.so.4
#21 0xb5afb7b0 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/qt4/libQtGui.so.4
#22 0xb6b72615 in KApplication::notify (this=0x84fb040, receiver=0x84fb040, event=0x85f7198) at /mnt/sdb2/tmp/portage/kde-base/kdelibs-4.7.0/work/kdelibs-4.7.0/kdeui/kernel/kapplication.cpp:311
#23 0xb6580899 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/qt4/libQtCore.so.4
#24 0xb658398f in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/qt4/libQtCore.so.4
#25 0xb6583b4f in QCoreApplication::sendPostedEvents(QObject*, int) () from /usr/lib/qt4/libQtCore.so.4
#26 0xb65ab2d7 in ?? () from /usr/lib/qt4/libQtCore.so.4
#27 0xb3590f80 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0



Reproducible: Always

Steps to Reproduce:
Just trying to run plasma-desktop automatically on startup or later from konsole.

Actual Results:  
plasma-desktop fails to start and crashes

Expected Results:  
working plasma-desktop

Portage 2.1.10.7 (default/linux/x86/10.0/desktop/kde, gcc-4.5.2, glibc-2.13-r4, 2.6.39-ck-r1-sh i686)
=================================================================
System uname: Linux-2.6.39-ck-r1-sh-i686-Intel-R-_Core-TM-2_Duo_CPU_E8400_@_3.00GHz-with-gentoo-2.0.3
Timestamp of tree: Fri, 29 Jul 2011 12:00:01 +0000
distcc 3.1 i686-pc-linux-gnu [disabled]
ccache version 3.1.5 [enabled]
app-shells/bash:          4.2_p10
dev-java/java-config:     2.1.11-r3
dev-lang/python:          2.7.2-r2, 3.1.3-r1, 3.2-r2
dev-util/ccache:          3.1.5
dev-util/cmake:           2.8.5-r2
dev-util/pkgconfig:       0.26
sys-apps/baselayout:      2.0.3
sys-apps/openrc:          0.8.3-r1
sys-apps/sandbox:         2.5
sys-devel/autoconf:       2.13, 2.68
sys-devel/automake:       1.9.6-r3, 1.10.3, 1.11.1-r1
sys-devel/binutils:       2.21.1
sys-devel/gcc:            4.5.2
sys-devel/gcc-config:     1.4.1-r1
sys-devel/libtool:        2.4-r1
sys-devel/make:           3.82-r1
sys-kernel/linux-headers: 2.6.38 (virtual/os-headers)
sys-libs/glibc:           2.13-r4
Repositories: gentoo kde barzog-overlay x-portage
ACCEPT_KEYWORDS="x86 ~x86"
ACCEPT_LICENSE="*"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-march=prescott -O2 -pipe -fomit-frame-pointer -ggdb"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /var/lib/redmine/config"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5.2/ext-active/ /etc/php/cgi-php5.2/ext-active/ /etc/php/cli-php5.2/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /var/lib/redmine/config/locales /var/lib/redmine/config/settings.yml"
CXXFLAGS="-march=prescott -O2 -pipe -fomit-frame-pointer -ggdb"
DISTDIR="/usr/portage/distfiles"
FEATURES="assume-digests binpkg-logs ccache distlocks ebuild-locks fixlafiles fixpackages news nostrip parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch"
FFLAGS=""
GENTOO_MIRRORS="http://gentoo.tups.lv/source/ http://ftp.linux.ee/pub/gentoo/distfiles/"
LANG="en_US.UTF-8"
LC_ALL="en_US.UTF-8"                                                                                                                                                                                                                         
LDFLAGS="-Wl,-O1 -Wl,--as-needed"                                                                                                                                                                                                            
LINGUAS="en lv ru"                                                                                                                                                                                                                           
MAKEOPTS="-j9"                                                                                                                                                                                                                               
PKGDIR="/home/sh/binpkgs/"                                                                                                                                                                                                                   
PORTAGE_CONFIGROOT="/"                                                                                                                                                                                                                       
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"                                               
PORTAGE_TMPDIR="/mnt/sdb2/tmp/"                                                                                                                                                                                                              
PORTDIR="/usr/portage"                                                                                                                                                                                                                       
PORTDIR_OVERLAY="/var/lib/layman/kde /var/lib/layman/barzog-overlay /usr/local/portage"                                                                                                                                                      
SYNC="rsync://rsync.gentoo.org/gentoo-portage"                                                                                                                                                                                               
USE="3dnow 3dnowext GAPING_SECURITY_HOLE PEAR X a52 a53dec aac ac3 accessibility acl acpi alsa amr apache2 apic apng aspell authfile avi bcmath berkdb bitmap-fonts bluetooth branding bzip2 cairo cdda cdinstall chroot clflush cli cmov cmp_legacy consolekit cpudetection cr8_legacy cracklib crypt cups curl cx16 cx8 cxx dba dbus de declarative devil divx dmx dri dts dvb dvd dvdr dvdread emboss emu10k1 enca encode exif expat extapic extensions extras fam ffmpeg firefox flac fontconfig fortran fpu fts3 fxsr fxsr_opt gd gdbm gdu gif gimp gnutls gphoto2 gpm gstreamer gtk2 holidays ht iconv icu inifile java jpeg jpeg2k json kde kipi lahf_lm lame lcms libgd libnotify lm lm_sensors mad matroska mca mce mikmod mmx mmxext mng modules moonlight mp3 mp4 mpeg msr mtrr mudflap musicbrainz mysql mysqli mythtv ncurses nls nptl nptlonly nsplugin nss ntpl nvidia nx ogg opencore-amr opengl openmp oss pae pam pango passenger pat pcre pdf pear perl pge phonon php php5 plasma png pni policykit ppds pppd pse pse36 python qt qt-mt qt3 qt3support qt4 quicktime rdtscp readline realmedia rep_good rtsp samba sasl sasl2 sdl secure-delete semantic-desktop sep session slang smp spell sqlite sse sse2 ssl startup-notification svg svm syscall sysfs tcpd threads tidy tiff truetype tsc udev unicode usb v4l v4l2 vdpau videos vme vnc vorbis webkit wmp x264 x86 xcb xcomposite xft xgl xinerama xml xmlreader xmlrpc xmlwriter xmp xorg xpm xscreensaver xsl xulrunner xv xvid zip zlib" ALSA_CARDS="hda-intel" ALSA_PCM_PLUGINS="*" APACHE2_MODULES="actions alias auth_basic auth_digest authn_anon authn_dbd authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock dbd deflate dir disk_cache env expires ext_filter file_cache filter headers ident imagemap include info log_config logio mem_cache mime mime_magic negotiation proxy proxy_ajp proxy_balancer proxy_connect proxy_http rewrite setenvif so speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="braindump flow karbon kexi kpresenter krita tables words" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" FOO2ZJS_DEVICES="hp2600n" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="keyboard mouse" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en lv ru" PHP_TARGETS="php5-2" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="nv nvidia" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"               
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS