the only thing google turned up is AC's allow_concurrency switch has been removed (in June) http://github.com/scottburton11/rails/commit/0c9281e82140f3a69e4473

the only thing google turned up is AC's allow_concurrency switch has been removed (in June) http://github.com/scottburton11/rails/commit/0c9281e82140f3a69e4473b3bcefd5ccebd79e2d http://github.com/scottburton11/rails/commit/0c9281e82140f3a...