gwibber fails to sync/update tweets

Binary package hint: gwibber

Since a couple of days gwibber fails to sync / update the latest tweets. The last one I've got is from 22 August 2010 at 21:08 GMT. My issue seems to be similar to olivers question here:

https://answers.launchpad.net/ubuntu/+source/gwibber/+question/123222

$ gwibber -d

** (gwibber:4065): WARNING **: Trying to register gtype 'WnckWindowState' as enum when in fact it is of type 'GFlags'

** (gwibber:4065): WARNING **: Trying to register gtype 'WnckWindowActions' as enum when in fact it is of type 'GFlags'

** (gwibber:4065): WARNING **: Trying to register gtype 'WnckWindowMoveResizeMask' as enum when in fact it is of type 'GFlags'
Updating...
Updating...
/usr/bin/gwibber:68: GtkWarning: gtk_container_add: assertion `GTK_IS_CONTAINER (container)' failed
  gtk.main()