rem: if( xml.status == 304 || xmlRes == jQuery.lastModified[url]  ) return true; 
add: return xml.status == 304 || xmlRes == jQuery.lastModified[url] || jQuery.browser.safari && xml.status == undefined; 
context: 	httpNotModified: function(xml, url) {		try {			var xmlRes = xml.getResponseHeader("Last-Modified");			// Firefox always returns 200. check Last-Modified date			if( xml.status == 304 || xmlRes == jQuery.lastModified[url]  ) return true;		} catch(e){}		return false;	},
meta: 1375	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1375/874e4f65eecdf74bb76c361d778aac4ed6158ed6/ajax.js/clean/src/ajax/ajax.js