Unable to download PHP files over 80kb


i write simple php up loader, i can only able to upload files less than 100kb,

my php upload limit is 64mb, folder permissions are okey(i tried to implement uloadyfy it also gives the same results)

path to php info http://ezwebdesigns.co.uk/onlinetv/info.php

path to live site http://ezwebdesigns.co.uk/onlinetv/index.html

php code

$name = $_FILES["file"]["name"];
        move_uploaded_file( $_FILES["file"]["tmp_name"], "uploads/" . $_FILES['file']['name']);

html code

<form id="file_upload_form" method="post" enctype="multipart/form-data" action="upload.php">
<input name="file" id="file" size="27" type="file" /><br />
<input type="submit" name="action" value="Upload" /><br />

please help me

I have this problem in a Wordpress project. The server was managed by IPS Config and the PHP is setting with Fast-CGI. I changed this config to mod_php and this solve my problem.