It appears upgrading to telepathy-gabble 0.17.5 has fixed the problem for me.
It may be worth getting this update into the stable release. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to empathy in Ubuntu. https://bugs.launchpad.net/bugs/1204588 Title: Empathy shows numbers instead of names for some Facebook contacts Status in “empathy” package in Ubuntu: Confirmed Status in “empathy” package in Fedora: New Bug description: I'm not sure if this started today or a few days ago but I just noticed today. Some of my Facebook contacts are not shown with their name anymore but instead a string following the scheme "[email protected]". ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: empathy 3.4.2.3-0ubuntu1 ProcVersionSignature: Ubuntu 3.8.0-26.38~precise2-generic 3.8.13.2 Uname: Linux 3.8.0-26-generic i686 ApportVersion: 2.0.1-0ubuntu17.3 Architecture: i386 Date: Wed Jul 24 18:40:36 2013 InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423) MarkForUpload: True ProcEnviron: PATH=(custom, no user) LANG=de_DE.UTF-8 SHELL=/bin/bash SourcePackage: empathy UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/empathy/+bug/1204588/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

