Rendering rescues/layout (internal_server_error)
/!\ FAILSAFE /!\  2010-07-01 13:44:09 +0100
  Status: 500 Internal Server Error
  key too long "ofm:BAh7CjoNbGFzdF91cmxJIitodHRwOi8vb2ZmaWNpYWxmbS5sb2NhbC9zZXNzaW9ucy9pbmRleAc6DWVuY29kaW5nIg1VUy1BU0NJSToWQF9yYWlsc19odG1sX3NhZmVGOg9zZXNzaW9uX2lkIiUyZmNiYWFkZDE4MTdlNGNkNDU3YzZjMTE3ZjQ4YWUzZDoJdXNlcmkBvDoQX2NzcmZfdG9rZW5JIjE3R1dQTy8vT2lScis4MGEvZTAyL2cvd3RPUUtJQ3ROTXlJQUNSUG10YWVvPQY7BkAHSSIKZmxhc2gGOwZAB0lDOidBY3Rpb25Db250cm9sbGVyOjpGbGFzaDo6Rmxhc2hIYXNoewAGOgpAdXNlZHsA--6e1b69a8492126a0c239d00370989bc79b118b13"
    /home/vagrant/.rvm/gems/ruby-1.9.1-p376@fair/gems/memcache-client-1.8.3/lib/memcache.rb:704:in `get_server_for_key'
    /home/vagrant/.rvm/gems/ruby-1.9.1-p376@fair/gems/memcache-client-1.8.3/lib/memcache.rb:921:in `request_setup'
    /home/vagrant/.rvm/gems/ruby-1.9.1-p376@fair/gems/memcache-client-1.8.3/lib/memcache.rb:886:in `with_server'
    /home/vagrant/.rvm/gems/ruby-1.9.1-p376@fair/gems/memcache-client-1.8.3/lib/memcache.rb:247:in `get'
    /mnt/hgfs/src/vendor/rails/actionpack/lib/action_controller/session/mem_cache_store.rb:32:in `get_session'
    /mnt/hgfs/src/vendor/rails/actionpack/lib/action_controller/session/abstract_store.rb:169:in `load_session'
    /mnt/hgfs/src/vendor/rails/actionpack/lib/action_controller/session/abstract_store.rb:63:in `block in load!'
    /mnt/hgfs/src/vendor/rails/actionpack/lib/action_controller/session/abstract_store.rb:71:in `stale_session_check!'
    /mnt/hgfs/src/vendor/rails/actionpack/lib/action_controller/session/abstract_store.rb:62:in `load!'
    /mnt/hgfs/src/vendor/rails/actionpack/lib/action_controller/session/abstract_store.rb:129:in `call'
    /mnt/hgfs/src/app/middleware/flash_session_cookie_middleware.rb:19:in `call'
    /mnt/hgfs/src/vendor/rails/actionpack/lib/action_controller/failsafe.rb:27:in `call'
    /home/vagrant/.rvm/gems/ruby-1.9.1-p376@fair/gems/rack-1.0.1/lib/rack/lock.rb:11:in `block in call'
    <internal:prelude>:8:in `synchronize'
    /home/vagrant/.rvm/gems/ruby-1.9.1-p376@fair/gems/rack-1.0.1/lib/rack/lock.rb:11:in `call'
    /mnt/hgfs/src/vendor/rails/actionpack/lib/action_controller/dispatcher.rb:115:in `block in call'
    /mnt/hgfs/src/vendor/rails/actionpack/lib/action_controller/reloader.rb:35:in `run'
    /mnt/hgfs/src/vendor/rails/actionpack/lib/action_controller/dispatcher.rb:109:in `call'
    /mnt/hgfs/src/vendor/rails/railties/lib/rails/rack/static.rb:32:in `call'
    /home/vagrant/.rvm/gems/ruby-1.9.1-p376@fair/gems/rack-1.0.1/lib/rack/urlmap.rb:46:in `block in call'
    /home/vagrant/.rvm/gems/ruby-1.9.1-p376@fair/gems/rack-1.0.1/lib/rack/urlmap.rb:40:in `each'
    /home/vagrant/.rvm/gems/ruby-1.9.1-p376@fair/gems/rack-1.0.1/lib/rack/urlmap.rb:40:in `call'
    /mnt/hgfs/src/vendor/rails/railties/lib/rails/rack/log_tailer.rb:18:in `call'
    /home/vagrant/.rvm/gems/ruby-1.9.1-p376@fair/gems/rack-1.0.1/lib/rack/content_length.rb:13:in `call'
    /home/vagrant/.rvm/gems/ruby-1.9.1-p376@fair/gems/rack-1.0.1/lib/rack/chunked.rb:15:in `call'
    /home/vagrant/.rvm/gems/ruby-1.9.1-p376@fair/gems/rack-1.0.1/lib/rack/handler/mongrel.rb:64:in `process'
    /home/vagrant/.rvm/gems/ruby-1.9.1-p376@fair/gems/mongrel-1.2.0.pre2/lib/mongrel.rb:165:in `block in process_client'
    /home/vagrant/.rvm/gems/ruby-1.9.1-p376@fair/gems/mongrel-1.2.0.pre2/lib/mongrel.rb:164:in `each'
    /home/vagrant/.rvm/gems/ruby-1.9.1-p376@fair/gems/mongrel-1.2.0.pre2/lib/mongrel.rb:164:in `process_client'
    /home/vagrant/.rvm/gems/ruby-1.9.1-p376@fair/gems/mongrel-1.2.0.pre2/lib/mongrel.rb:291:in `block (2 levels) in run'