[devnull69]

First of all, you should not call done() from inside the setTimeout callback. You should only call it after the request started by updates() finished, i.e. in its success callback

Second: There must not be a semicolon after the closing bracket of the success callback

$(document).ready(updates);
 
function updates() {
 $.ajax({
     url:"http://wawhost.com/appProject/fetch.php",
     dataType: 'jsonp',
     success:function(data){
       $("ul").empty();
       $.each(data.result, function(){
	    $("ul").append("<li>Name: "+this['name']+
		"</li><li>Age: "+this['age']+
		"</li><li>Company: "+this['company']+
		"</li><br />");
       });
       setTimeout(updates, 200);
     }
 });
}

This might not be the only issue here, but it should give you a good start :-)