we\'ve just upgraded to Rails 3.2.5 from Rails 3.0.7 and using the assets-pipeline compilation on the fly for the staging server, but some times we face this exception !
We contacted the provider's support, and they are responded in 2 messages like this:
We have a sysadmin checking it and we’ll respond to your ticket soon.
And until now this error does not show :) Hope it will keep not showing for the future too ...
Thanks, and best of LUCK ...