nepomukservicestub crashed with SIGSEGV in _int_malloc()

on start up.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: kde-runtime 4:4.7.1-0ubuntu5
ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu2
Architecture: i386
Date: Wed Oct 5 07:55:31 2011
ExecutablePath: /usr/bin/nepomukservicestub
InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Beta i386 (20110921.2)
ProcCmdline: /usr/bin/nepomukservicestub nepomukstorage
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
 LANGUAGE=
SegvAnalysis:
 Segfault happened at: 0x87ded89 <_int_malloc+9>: call 0x887cb63 <__i686.get_pc_thunk.bx>
 PC (0x087ded89) ok
 source "0x887cb63" (0x0887cb63) ok
 destination "(%esp)" (0xb50d5fdc) in non-writable VMA region: 0xb50d5000-0xb50d6000 ---p None
 Stack memory exhausted (SP below stack segment)
SegvReason: writing VMA None
Signal: 11
SourcePackage: kde-runtime
StacktraceTop:
 _int_malloc (av=0x88e8400, bytes=96) at malloc.c:4249
 __GI___libc_malloc (bytes=96) at malloc.c:3660
 operator new(unsigned int) () from /usr/lib/i386-linux-gnu/libstdc++.so.6
 QMutex::QMutex(QMutex::RecursionMode) () from /usr/lib/i386-linux-gnu/libQtCore.so.4
 ?? () from /usr/lib/i386-linux-gnu/libQtCore.so.4
Title: nepomukservicestub crashed with SIGSEGV in _int_malloc()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare