I've got round this by removing nginx-extras. The error messages no longer
appear in the logs and - more importantly - nginx and php5-fpm both now run
again together. The website still doesn't work properly, but I think that's
a Drupal problem
Steve
Posted at Nginx Forum:
http://forum.nginx.org/
I am moving a Drupal 7 application on Ubuntu 14.04 from development to
production. I use nginx (1.4.6-1ubuntu3.2) and php5-fpm
(5.5.9+dfsg-1ubuntu4.9).
The production machine is a VPS hosted at 1&1 and was running alright up
until about 4 hours ago. Nginx had been giving some errors on startup: