Loading Dashboard, or maybe other pages failing strangely on DH

Very intermittent

Processing DashboardController#index (for 75.157.204.10 at 2009-05-20 21:24:37) [GET]

TypeError (can't convert Hash into Integer):
/usr/lib/ruby/1.8/yaml.rb:389:in hash' /usr/lib/ruby/1.8/yaml.rb:389:inquick_emit' /usr/lib/ruby/1.8/yaml/rubytypes.rb:107:in to_yaml' /usr/lib/ruby/1.8/yaml/rubytypes.rb:18:innode_export' /usr/lib/ruby/1.8/yaml/rubytypes.rb:18:in add' /usr/lib/ruby/1.8/yaml/rubytypes.rb:18:into_yaml' /usr/lib/ruby/1.8/yaml/rubytypes.rb:17:in each' /usr/lib/ruby/1.8/yaml/rubytypes.rb:17:into_yaml' /usr/lib/ruby/1.8/yaml/rubytypes.rb:16:in map' /usr/lib/ruby/1.8/yaml/rubytypes.rb:16:into_yaml' /usr/lib/ruby/1.8/yaml.rb:391:in call' /usr/lib/ruby/1.8/yaml.rb:391:inemit' /usr/lib/ruby/1.8/yaml.rb:391:in quick_emit' /usr/lib/ruby/1.8/yaml/rubytypes.rb:15:into_yaml' /dh/passenger/lib/phusion_passenger/rack/request_handler.rb:65:in process_request' /dh/passenger/lib/phusion_passenger/abstract_request_handler.rb:197:inmain_loop' /dh/passenger/lib/phusion_passenger/railz/application_spawner.rb:340:in start_request_handler' /dh/passenger/lib/phusion_passenger/railz/application_spawner.rb:298:inhandle_spawn_application' /dh/passenger/lib/phusion_passenger/utils.rb:176:in safe_fork' /dh/passenger/lib/phusion_passenger/railz/application_spawner.rb:296:inhandle_spawn_application' /dh/passenger/lib/phusion_passenger/abstract_server.rb:332:in __send__' /dh/passenger/lib/phusion_passenger/abstract_server.rb:332:inmain_loop' /dh/passenger/lib/phusion_passenger/abstract_server.rb:182:in start_synchronously' /dh/passenger/lib/phusion_passenger/abstract_server.rb:149:instart' /dh/passenger/lib/phusion_passenger/railz/application_spawner.rb:192:in start' /dh/passenger/lib/phusion_passenger/spawn_manager.rb:260:inspawn_rails_application' /dh/passenger/lib/phusion_passenger/abstract_server_collection.rb:121:in lookup_or_add' /dh/passenger/lib/phusion_passenger/spawn_manager.rb:254:inspawn_rails_application' /dh/passenger/lib/phusion_passenger/abstract_server_collection.rb:75:in synchronize' /dh/passenger/lib/phusion_passenger/abstract_server_collection.rb:74:insynchronize' /dh/passenger/lib/phusion_passenger/spawn_manager.rb:253:in spawn_rails_application' /dh/passenger/lib/phusion_passenger/spawn_manager.rb:148:inspawn_application' /dh/passenger/lib/phusion_passenger/spawn_manager.rb:285:in handle_spawn_application' /dh/passenger/lib/phusion_passenger/abstract_server.rb:332:insend' /dh/passenger/lib/phusion_passenger/abstract_server.rb:332:in main_loop' /dh/passenger/lib/phusion_passenger/abstract_server.rb:182:instart_synchronously'

Rendering /home/agilities/beta.greenbuildingbrain.org/releases/20090521034915/public/500.html (500 Internal Server Error)