I've got a similar but different issue... Jquery.form works beautifully... From the result of the form call - my php script sends html back to the browser with $(document).ready(... scripts to setup the resultant code. When I DON'T upload a file, the result works perfectly -- any $(... jquery calls are processed and work perfectly. However when I have the form upload a file (ie: <input type="file"...), the resulting code that gets processed by the browser doesn't understand the $ Jquery calls -- gives me a: "$ is not defined - [Break on this error] $(document).ready(function(){" in the console log (using Firefox Firebug). It seems that after Jquery.form does its Iframe post, any further jquery scripts are non-functional. Anyone have any ideas? Thanks! Ryan