These nepomuk problems are causing my startkde session to die hence I can't run KDE. From the startkde start up messages:

nepomukservicestub: No service name specified
nepomukservicestub: Use --help to get a list of available command line options.
konsole(12893) Konsole::SessionManager::loadProfile: Could not load profile from "/usr/share/kde4/apps/konsole/Shell.profile"
konsole(12893)/kdeui (kdelibs): Attempt to use QAction "" with KXMLGUIFactory!
konsole(12893)/kdeui (kdelibs): Attempt to use QAction "change-profile" with KXMLGUIFactory!
konsole(12893)/kdeui (kdelibs): Attempt to use QAction "" with KXMLGUIFactory!
konsole(12893)/kdeui (kdelibs): Attempt to use QAction "change-profile" with KXMLGUIFactory!
kontact(12973)/libakonadi Akonadi::AgentManagerPrivate::createDBusInterface: AgentManager failed to get a valid AgentManager DBus interface. Error is: 1 "org.freedesktop.DBus.Error.NameHasNoOwner" "Could not get owner of name 'org.freedesktop.Akonadi.Control': no such name"
Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)
search paths: ("/people/ssimpson/bin", "/usr/lib/mit/bin", "/usr/lib/mit/sbin", "/bin", "/usr/bin", "/sbin", "/usr/sbin", "/usr/X11R6/bin", "/usr/lib/qt3/bin", "/opt/gnome/bin", "/usr/lib/news/bin", "/opt/tuxbase/usr/bin", "/usr/lib/hk_classes/bin", "/usr/lib/mailman/bin", "/usr/lib/suseRegister/bin", "/usr/lib/TeXmacs/bin", "/usr/lib/xen/bin", "/usr/lib/YaST2/bin", "/usr/share/YaST2/data/devtools/bin", "/usr/lib/NX", "/usr/share/ant/bin", "/usr/lib/pm-utils/bin", "/opt/cxoffice/bin", "/usr/lib/Adobe/Reader8/Reader/intellinux/bin", "/usr/games", "/usr/local/bin", "/usr/local/sbin", "/apps/local/bin", "/apps/local/sbin", "/opt/kde3/bin", "/opt/kde3/sbin", "/usr/lib/texmf/bin/i586-linux", "/usr/share/SpecTcl/bin", "/usr/share/geronimo*/bin", "/usr/share/kde4/apps/kapptemplate/bin", "/usr/share/netbeans/bin", "/usr/share/tomcat6/bin", "/opt/dx/bin", "/apps/local/PasswordSafeSWT-0.6", "/apps/local/aptana", "/usr/sbin", "/usr/local/sbin", "/usr/local/libexec", "/usr/libexec", "/opt/mysql/libexec", "/opt/local/lib/mysql5/bin", "/opt/mysql/sbin")
Found mysql_install_db: "/usr/bin/mysql_install_db"
Found mysqlcheck: "/usr/bin/mysqlcheck"
*** nss-shared-helper: Shared database disabled (set NSS_USE_SHARED_DB to enable).
kdeinit4: Fatal IO error: client killed
kdeinit4: sending SIGHUP to children.
[/usr/bin/nepomukservicestub] nepomukservicestub: Fatal IO error: client killed
Hangup
GOT SIGHUP
Could not connect to D-Bus server: org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-ERbCF4isZN: Connection refused
startkde: Shutting down...

Please see my response to your seperate Nepomuk thread.