Mongrel users - Dec 2006 - mongrel_upload_progress + upload.rb +background (daemon?)

Im checking out the mongrel_upload_progress plugin and have it  
working beautifully on my dev box.  however, now that i am ready to  
push this up into production i have run into a few gotchas that i  
cannot seem to find any documentation or examples for.

the lib/upload.rb doesnt seem to want to run in the background.  
perhaps im doing something wrong?

Does anyone have any experience deploying this sort of setup using  
capistrano? how would i start/stop/restart the upload server?

any tips/idea are greatly appreciated.

-jerrod