nepomukservicestub crashed with SIGSEGV in QMetaObject::activate()

[lelamal]

Binary package hint: kdebase-runtime

After upgrading from karmic to lucid, I logged in, and was exploring the icons in the system tray, clicked on Nepomuk icon, then got this bug report.

ProblemType: Crash
DistroRelease: Ubuntu 10.04
Package: kdebase-runtime 4:4.4.2-0ubuntu4
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic i686
Architecture: i386
Date: Sat Apr 24 20:43:15 2010
ExecutablePath: /usr/bin/nepomukservicestub
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
ProcCmdline: /usr/bin/nepomukservicestub nepomukstrigiservice
ProcEnviron:
 LANGUAGE=en_GB:en
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x28c65b <_ZN11QMetaObject8activateEP7QObjectPKS_iPPv+1371>: test %edi,0x34(%esi,%edx,4)
 PC (0x0028c65b) ok
 source "%edi" ok
 destination "0x34(%esi,%edx,4)" (0x10094ac9) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: kdebase-runtime
StacktraceTop:
 QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
 QLocalSocket::stateChanged(QLocalSocket::LocalSocketState)
 ?? () from /usr/lib/libQtNetwork.so.4
 QLocalSocket::qt_metacall(QMetaObject::Call, int, void**) ()
 QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) () from /usr/lib/libQtCore.so.4
Title: nepomukservicestub crashed with SIGSEGV in QMetaObject::activate()
UserGroups: adm admin audio cdrom dialout lpadmin plugdev sambashare
XsessionErrors: (process:1504): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed

[Apport retracing service (apport)]

StacktraceTop:
 QMetaObject::activate (sender=0x90deb51, m=0x1e29eac,
 QLocalSocket::stateChanged (this=0x90deb51,
 QLocalSocketPrivate::_q_stateChanged (this=0x94a9588,
 QLocalSocket::qt_metacall (this=0x90deb50,
 QMetaObject::metacall (object=0x90deb50,

[dino99 (9d9)]

This version has expired long time ago, and is no more supported