I fixed this by enabling a second 'dev' profile on Firefox. No dev extensions (firebug, LiveHTTPHeaders, WebDeveloper, etc) are enabled in my normal profile. This speeds things up considerably.
Slashdot videos: Now with more Slashdot!
We've improved Slashdot's video section; now you can view our video interviews, product close-ups and site visits with all the usual Slashdot options to comment, share, etc. No more walled garden! It's a work in progress -- we hope you'll check it out (Learn more about the recent updates).