If you've not tried Google's Chrome web browser or the open source version, Chromium, you should. It's blindingly fast, and much as I like Firefox, I will give Chromium a serious workout soon--just use it for a few days or a week. Who knows? I may switch. (Finding an adblock extension for it closed the deal; it's a sine qua non.)
I noticed one thing just now that is a bit odd, but practically is a point in Chromium's favor: it doesn't give the empty columns at the right and left of this blog nearly as much space as Firefox does. (It seems a little weird that they should differ, but perhaps that's something that web standards don't totally specify.) That means images, especially the masthead, are much larger. Text is the same size, but a wider column means less scrolling, and that one can set text ragged right and have it look a little nicer.
UPDATE: There's more to it than that. I tried viewing the blog on a test account on my computer, and it looks just like it does with Chromium, so something about the files under ~/.mozilla/firefox/mumble.whatever is making it display differently--but what?