Since upgrading to 2.3, this error shows up dozens of times a day, and I have no idea what's causing it. Anyone have any ideas?
Processing ApplicationController#index (for 62.75.252.249 at 2009-03-22 13:23:08) [GET] Rendering /home/andrew/public_html/mysite/public/404.html (404 Not Found) /!\ FAILSAFE /!\ Sun Mar 22 13:24:09 -0700 2009 Status: 500 Internal Server Error undefined method `' for nil:NilClass /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ session/cookie_store.rb:106:in `call' /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ failsafe.rb:11:in `call' /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ vendor/rack-1.0/rack/lock.rb:11:in `call' /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ vendor/rack-1.0/rack/lock.rb:11:in `synchronize' /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ vendor/rack-1.0/rack/lock.rb:11:in `call' /usr/lib/ruby/gems/1.8/gems/actionpack-2.3.2/lib/action_controller/ dispatcher.rb:106:in `call' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ rack/request_handler.rb:65:in `process_request' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ abstract_request_handler.rb:197:in `main_loop' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ railz/application_spawner.rb:340:in `start_request_handler' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ railz/application_spawner.rb:298:in `handle_spawn_application' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ utils.rb:176:in `safe_fork' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ railz/application_spawner.rb:296:in `handle_spawn_application' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ abstract_server.rb:332:in `__send__' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ abstract_server.rb:332:in `main_loop' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ abstract_server.rb:182:in `start_synchronously' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ abstract_server.rb:149:in `start' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ railz/application_spawner.rb:192:in `start' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ spawn_manager.rb:260:in `spawn_rails_application' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ abstract_server_collection.rb:121:in `lookup_or_add' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ spawn_manager.rb:254:in `spawn_rails_application' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ abstract_server_collection.rb:75:in `synchronize' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ abstract_server_collection.rb:74:in `synchronize' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ spawn_manager.rb:253:in `spawn_rails_application' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ spawn_manager.rb:148:in `spawn_application' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ spawn_manager.rb:285:in `handle_spawn_application' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ abstract_server.rb:332:in `__send__' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ abstract_server.rb:332:in `main_loop' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/lib/phusion_passenger/ abstract_server.rb:182:in `start_synchronously' /usr/lib/ruby/gems/1.8/gems/passenger-2.1.2/bin/passenger-spawn- server:50