'Filter chain halted' in production log

I’m hunting for stability with 1.1 and dispatch.fcgi … it’s close

Anybody ever come across this in the production log or know what it’s
referring to? It’s cropping up A LOT.

Filter chain halted as [#<Proc:0x4062a970@…/vendor/rails/actionpack/
lib/action_controller/filters.rb:227>] returned false

Cheers

Gary