nepomukservicestub crashed with SIGSEGV

[bronx]

nepomukservicestub : this program crashes very often

ProblemType: Crash
DistroRelease: Ubuntu 10.04
Package: kdebase-runtime 4:4.4.2-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-19.28-generic 2.6.32.10+drm33.1
Uname: Linux 2.6.32-19-generic i686
Architecture: i386
CrashCounter: 1
Date: Thu Apr 1 10:56:21 2010
ExecutablePath: /usr/bin/nepomukservicestub
InstallationMedia: Kubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
ProcCmdline: /usr/bin/nepomukservicestub nepomukstorage
ProcEnviron:
 LANG=tr_TR.UTF-8
 SHELL=/bin/bash
 LANGUAGE=
SegvAnalysis:
 Segfault happened at: 0x3d0e151: mov 0x10(%esi),%eax
 PC (0x03d0e151) ok
 source "0x10(%esi)" (0x00000010) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: kdebase-runtime
StacktraceTop:
 ?? () from /usr/lib/soprano/libsoprano_virtuosobackend.so
 ?? () from /usr/lib/soprano/libsoprano_virtuosobackend.so
 ?? () from /usr/lib/soprano/libsoprano_virtuosobackend.so
 ?? () from /usr/lib/soprano/libsoprano_virtuosobackend.so
 ?? () from /usr/lib/soprano/libsoprano_virtuosobackend.so
Title: nepomukservicestub crashed with SIGSEGV
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors: (process:1577): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed

[Apport retracing service (apport)]

StacktraceTop:
 Soprano::ODBC::Connection::execute (this=0x0, request=@0xbfa1f348)
 Soprano::ODBC::Connection::executeQuery (this=0x0,
 Soprano::Virtuoso::DatabaseConfigurator::updateFulltextIndexRules (this=0xbfa1f538, enable=true)
 Soprano::Virtuoso::DatabaseConfigurator::updateFulltextIndexState (this=0xbfa1f538, state=@0xbfa1f454)
 Soprano::Virtuoso::DatabaseConfigurator::configureServer (