So, a colleague of mine told me about the YSlow plugin for Firebug yesterday. I had a look at it and it does do an amazing job of analyzing Web pages according to Steve Souders performance rules.
The only hitch in the get-along: a number of pages I visitedÂ when the plugin was activated were effectively unusable for up to a minute, presumably as YSlow analyzed them.
Great idea, all Web developers whould use it to put me out of a job. But the overall performance of the plugin will need to be improved before I re-install it.