A longtime customer, Jason, has kindly updated a couple of important Ruby on Rails Wiki entries. The first deals with reducing the memory usage of your Apache and Rails setup. The second is a great overview of how to setup Rails with Mongrel and the newest kid on the block, Passenger.
Read them both here:
http://www.silverrack.com/wiki/index.php/Reducing_Memory_Usage
http://www.silverrack.com/wiki/index.php/Ruby_on_Rails
