Can't start installation - EMPTY_RESPONSE


I uploaded zip file, change file permissions, zend loader and required modules all exists.
But when I head for installation directory, it redirect to /devel/iface/login.php and give empty page with Error: ERR_EMPTY_RESPONSE.

didnt solve, perhaps my sevrver config problem. just changed server now everthing ok. new server all the same software, only web server config is from scratch.