I reverted to Jetpack 1.9.2 for the moment, the break seems to have happened in a following update.
Johannes : the plugin author is Automatic, not sure they will listen if a small plugin is broken because of them.
The Jetpack plugin is widely promoted and used, so sadly YAPB has already lost against it…
(I use the latest YAPB, TwentyEleven, and have tried disabling all other plugins with no effect, I reverted Jetpack step by step until it worked again)
