mongrel_upload_progess_bar - where are my files?

I just configured mongrel_upload_progess_bar following this doc:

  http://mongrel.rubyforge.org/wiki/UploadProgress

My "config/mongrel_upload_progress.conf" looks like:

uri "/",
   :handler => plugin("/handlers/upload",
     :path_info => '/Users/railer/Documents/RAILS/dummy/files/upload',
     :drb => 'druby://127.0.0.1:2999'),
   :in_front => true

Everything seems to work fine, progress bar, form, logfile ...

But I could not find my uploaded files in the path...I only recognize
some files in /var/folders/...bla ... bla ...

development.log:

Processing FilesController#upload (for 127.0.0.1 at 2008-05-05 01:50:19) [POST]
   Session ID: BAh7BzoMY3NyZl9pZCIlNGZjYzE3M2I1M2VhZjA4NzU3NWRhODAwODY3MWQ1%0ANGUiCmZsYXNoSUM6J0FjdGlvbkNvbnRyb2xsZXI6OkZsYXNoOjpGbGFzaEhh%0Ac2h7AAY6CkB1c2VkewA%3D--56884b6ccd656497d776379fa23d7909bc5afb83
   Parameters: {"commit"=>"Upload", "authenticity_token"=>"6a06cc13fcb42087ee3a74e2e6a16c2c0d1df8f6", "action"=>"upload", "controller"=>"files", "upload_id"=>"1209944944", "data"=>#<File:/var/folders/wY/wYe0+otlEPq0TtDuamD7IU+++TM/-Tmp-/CGI808-2>}
Completed in 0.00295 (339 reqs/sec) | Rendering: 0.00005 (1%) | DB: 0.00000 (0%) | 200 OK [http://127.0.0.1/files/upload?upload_id=1209944944]

What's wrong here?

Thanx

repost in Mongrel?