nepomukserver crashed with SIGSEGV in malloc_consolidate()

It occurred on first boot with no other activity occurring.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: kde-runtime 4:4.8.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
NonfreeKernelModules: wl fglrx
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
Date: Sun Mar 18 15:13:57 2012
ExecutablePath: /usr/bin/nepomukserver
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120228.1)
ProcCmdline: /usr/bin/nepomukserver
ProcEnviron:
 LANGUAGE=en_AU:en
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7fe14bfd0b12 <malloc_consolidate+210>: mov 0x8(%rbx),%rdx
 PC (0x7fe14bfd0b12) ok
 source "0x8(%rbx)" (0x100000007) not located in a known VMA region (needed readable region)!
 destination "%rdx" ok
 Stack memory exhausted (SP below stack segment)
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: kde-runtime
StacktraceTop:
 malloc_consolidate (av=0x7fe13c000020) at malloc.c:4238
 malloc_consolidate (av=0x7fe13c000020) at malloc.c:4215
 _int_malloc (av=0x7fe13c000020, bytes=2032) at malloc.c:3532
 __libc_calloc (n=<optimised out>, elem_size=<optimised out>) at malloc.c:3274
 g_malloc0 () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: nepomukserver crashed with SIGSEGV in malloc_consolidate()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo