I'm just using AdBlock Plus on this particular browser (Conkeror; Firefox-like). Haven't bothered to try with Firefox (which doesn't have Ghostery, but has a more stringent ad-blocking policy and some other privacy-ish addons that I can't recall at the moment).

It happened to me without any adblockers or other add-ons (Chrome, in its default form.) The refreshes were partly obnoxious due to not always scrolling back to the same place on the page.

Hmm, must be the site, then. I'm using Firefox (with Ghostery, why do you say it doesn't have it?) and it refreshes for me as well.

Well yeah, it's definitely the site; one of the replies to my original comment managed to identify the piece of JS that's doing it. Using a JS-blocker (or inserting a bit of JS into your developer tools to blank-out the offending function) would do the trick.

I'm not using Ghostery or any ad-blocking or tracking-blocking extensions, and I have the same problem.