After updating my Pogoplug Series 4 and SheevaPlug today both failed at boot and I couldn't ssh to both.
Latest system update for both was 16-Nov.
I didn't had the time to look at the Pogoplug.
A quick peek in the bootlog after connecting with serial to the SheevaPlug showed that the system is failing at bind mount.
The error in the journal is
$this->bbcode_second_pass_quote('', 'F')ailed at step EXEC spawning /bin/plym