akonadi_nepomuk_contact_feeder uses most of cpu turning kubuntu 11.10 unresponsive

With a fresh installation, no contacts at all, akonadi_nepomuk_contact_feeders takes 90% of cpu. Once Akonadi Server is stopped, cpu and memory usage go down, and the system is responsive again.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: xorg 1:7.6+7ubuntu7
ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9
Uname: Linux 3.0.0-14-generic i686
ApportVersion: 1.23-0ubuntu4
Architecture: i386
Date: Sat Dec 31 17:17:39 2011
InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)