$_POST and $this->input->post was empty after submit in production environment. why?

[eluser]Gian Marco[/eluser]
Hello, I have recently uploaded in production environment my site build with codeigniter.

My problem is: in local pc and in other servers all works ok, but on aruba hosting, a cheaper italian hosting, $_POST submission seems to don't work correctly.

I have build a test page:

http://www.immobiliarecipolli.it/sito_nu...home/login

Here i print POST, GET, SESSION, and SERVER arrays.

then at the bottom of the page there is the form for make login.
In theory, if you insert somthing and click the login button, at the top of the page the post array should be valorized with passed username and password, but on this server nothing appen.

My php configuration is visible here:

http://www.immobiliarecipolli.it/sito_nuovo/prova.php


any ideas about what's the problem?

thank you