Fetching a non-REST route using Net::HTTP fails

With edge Rails (3.0.pre), the problem can be reproduced as follows

ruby script/generate controller store index rake db:migrate ruby script/server

Net::HTTP.get_response('localhost','/store',3000)

A complete script which does this is attached. Note: this doesn't just affect programmatic clients, it also will intermittently affect IE users:

http://intertwingly.net/blog/2007/08/23/Intermittent-IE-failures#c1...