nepomukservicestub crashed with SIGSEGV in librdf_hash_get_one()

[canapone]

Binary package hint: kdebase-runtime

i'm in a live install kubuntu 9.04, does nothing

ProblemType: Crash
Architecture: i386
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/bin/nepomukservicestub
Package: kdebase-runtime 4:4.2.1-0ubuntu1
ProcCmdline: /usr/bin/nepomukservicestub nepomukstorage
ProcEnviron:
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
 LANGUAGE=
Signal: 11
SourcePackage: kdebase-runtime
StacktraceTop:
 librdf_hash_get_one () from /usr/lib/librdf.so.0
 librdf_new_uri () from /usr/lib/librdf.so.0
 ?? () from /usr/lib/librdf.so.0
 raptor_namespaces_init () from /usr/lib/libraptor.so.1
 raptor_new_namespaces () from /usr/lib/libraptor.so.1
Title: nepomukservicestub crashed with SIGSEGV in librdf_hash_get_one()
Uname: Linux 2.6.28-9-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare