Rack parameter issue still persists

Hi,

this is my first ticket, so please excuse any mistakes.

I have a very strange issue. I upgraded my Application to Rails 2.3.2 without any problems, then freezed it to vendor/rails and worked through all my specs after I also upgraded Rspec to 1.2.4. At some point (I cannot exactly tell you when) nested parameters didn't work anymore (as described here: https://rails.lighthouseapp.com/...>

That means the server receives something like:

{ "post[body]" => "data" }

instead of

{ "post" => { "body" => "data" } }

So I worked through all the forums, deinstalled the gem rack-0.9.1 and checked that I have the commit 39ff550fa88da9a22d8c21ca872f5e4d0d83f8d4 (http://github.com/rails/rails/co.... That means the bundled rack-1.0 should be loaded, at least my rack.rb reads on line 6

$:.unshift(File.expand_path(File.dirname(FILE)))

Still the problem persists and I don't know exactly how to fix this.

Any help is appreciated! Thanks