così mi dà:

Notice: Undefined index: filename in /web/htdocs/www.andreadupre.it/home/cp_inserimento_documento.php on line 37

Notice: Undefined index: filename in /web/htdocs/www.andreadupre.it/home/cp_inserimento_documento.php on line 41

Notice: Undefined index: filename in /web/htdocs/www.andreadupre.it/home/cp_inserimento_documento.php on line 44

37: $file_name = ($new_name) ? $new_name : $_FILES["filename"]["name"];
41: if(is_uploaded_file($_FILES["filename"]["tmp_name"]))
44: chmod($upload_dir."/".$_FILES["filename"]["name"],0777);

Il problema credo sia il timeout sugli script impostato nel server