gwibber starts up on the "messages" tab rather than home
If you're on the home tab and you quit gwibber, when you start it back up you'll be on the messages tab rather than the home tab. Considering the confusing nature of the "messages" tab, it can take a while before you realize what's going on and that you're missing updates.
DistroRelease: Ubuntu 12.04
Package: gwibber 3.3.92-0ubuntu1
Uname: Linux 3.2.0-19-generic x86_64
Date: Mon Mar 19 12:58:19 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
UpgradeStatus: No upgrade log present (probably fresh install)