Engadget Slowness

Ever since Engadget redesigned their site a while ago, it's been really slow on my notebook. I don't visit the site much because I have their feed loaded in my RSS reader, but I occasionally will visit the site to read/post comments. The new site takes a really long time to load (mostly the ads, the text loads at fairly normal speed) and once the page is loaded, my browser has a hard time scrolling down the page smoothly (the scrolling lags and is extremely choppy).

Engadget recently said that they have tweaked the site to make it faster (just in time for CES overload), but I haven't noticed any improvement. I thought the problem was probably due to the aging technology inside my CPU. I regularly use Firefox but will occasionally use Internet Explorer if I have to or if I want to test something, etc. For some reason, IE does much better with the Engadget site on my laptop. The pages load faster, the ads are displayed quicker and the page scrolls smoothly. I've started to notice this with a few other sites since (IE displays them faster). I have no idea why and I don't want to use IE regularly, although it's not as bad as it used to be. Any ideas why Firefox sucks on some sites? They need to fix this before V3 (in addition to the obscene amount of memory that it hogs).