Large Upload Files

I am trying to upload large files using PHP. I can upload files up to 512K, but anything larger fails. The browser shows a "page cannot be displayed" message when this is attempted. So far the only advice I have found on the web is to do the things I have already tried. Things I have already done include: setting: LimitRequestBody in httpd.conf in a directory context in a location contect in a virtual host context setting: upload_max_filesize in php.ini setting: post_max_size in php.ini The httpd error_log reports the following when a large file upload is attempted: [Sat May 17 07:20:44 2003] [error] [client xxx.xxx.xxx.xxx] Requested content-length of 764385 is larger than the configured limit of 524288, referer: http://xxxx.xxxx.xxxx/xxxxxx/xxxx.php The system is running RedHat linux 8.0. Any assistance will be appreciated. -- Best Regards, Robert