I can recommend to install Yahoo YSlow (http://developer.yahoo.com/yslow/ http://developer.yahoo.com/yslow/), a Firebug extension for Firefox. next to the achie

I can recommend to install Yahoo YSlow (http://developer.yahoo.com/yslow/ http://developer.yahoo.com/yslow/), a Firebug extension for Firefox. next to the achieved performance test results of a specific page, it also shows how to improve the performance. I think it's a quite useful tool and perhaps a must-have extension for webdevelopers.