Hello, Ok, So I have a very odd issue.... I have a Shockwave 3D Multiplayer Game Hosted at my website http://apocalypsecity.net/test.html (test.html, just for testing on firefox) The Game has a built in Registration System that is Based on PHP. Users can Register and Login to their Accounts just fine under Chrome or Internet Explorer on my Domain / Website (above), but they can't do so with FireFox!!! Now here is the Kicker! I have another Copy of my Game Hosted on My Developers Server at http://necromanthus.com/Games/ShockWave/ApocalypseCity.html If I tried to Login here, it works perfectly fine on any Web Browser, including Firefox. Now here is the difference between our Setup. my Web Server is Hosted at BlueHost.com (Shared Hosting w/ PHP5) my Developers Web Server, is actually a Dedicated Linux Server (Physical Server w/PHP5) Why would users be able to Login to my Game with Firefox Browser on my Developers Host, but not on mine? We have narrowed it down to FireFox not being able to Process my PHP Script from my Server (shared hosting provider), as we have an identical setup with all the same HTML, PHP, and DATABASE Files, Permissions Set, and Same PHP Setup. What would cause something like this?