Topic: Deploy via copy strategy with capistrano

I'm trying to deploy a rails app on a crazy server. When I make a cap deploy:setup capistrano give me the right executing command but on the [domain.ccom] executing command line I've got a frozen kernel with a  ** [out ::] username %

If I'm doing a cap deploy with copy strategy the sftp transfer goes good but when it execute other command it come back frozen.

After some googling it seams to be the sh command that bug so I've setted the default_run_options[:shell] = false to use the ssh shell and it doesnt work better.

Is my question is clear? please someone help-meee!!!!!