mongohang

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`perform_action_without_newrelic_trace'    /usr/local/lib/ruby/gems/1.8/gems/activerecord-2.2.3/lib/active_record/connection_adapters/abstract/query_cache.rb:34:in `cache'    /usr/local/lib/ruby/gems/1.8/gems/activerecord-2.2.3/lib/active_record/query_cache.rb:8:in `cache'    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.2.3/lib/action_controller/caching/sql_cache.rb:12:in `perform_action_without_newrelic_trace'    /vendor/plugins/newrelic_rpm/lib/new_relic/agent/instrumentation/controller_instrumentation.rb:123:in `passenger_orig_perform_action'    /vendor/plugins/newrelic_rpm/lib/new_relic/agent/method_tracer.rb:41:in `trace_method_execution_with_scope'    /vendor/plugins/newrelic_rpm/lib/new_relic/agent/instrumentation/controller_instrumentation.rb:109:in `passenger_orig_perform_action'    /vendor/plugins/newrelic_rpm/lib/new_relic/agent/method_tracer.rb:18:in `trace_method_execution_no_scope'    /vendor/plugins/newrelic_rpm/lib/new_relic/agent/instrumentation/controller_instrumentation.rb:103:in `passenger_orig_perform_action'    /usr/local/lib/ruby/gems/1.8/gems/passenger-2.2.7/lib/phusion_passenger/railz/request_handler.rb:65:in `perform_action'    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.2.3/lib/action_controller/base.rb:524:in `send'    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.2.3/lib/action_controller/base.rb:524:in `process_without_filters'    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.2.3/lib/action_controller/filters.rb:606:in `process_without_session_management_support'    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.2.3/lib/action_controller/session_management.rb:134:in `process'    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.2.3/lib/action_controller/base.rb:392:in `process'    /usr/local/lib/ruby/gems/1.8/gems/actionpack-2.2.3/lib/action_controller/dispatcher.rb:184:in `handle_request'    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