Does clicking voting arrows *sometimes* take you to a blank page?
timf: Yes, this has happened to me many times.  The only correlation I ever had a hunch at was perhaps a long delay before hitting the arrow (like where I had opened a new tab and gotten to it later).Reloading the page (which at that point is the previous page) gets rid of the problem.Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.5) Gecko/2009010220 Gentoo Firefox/3.0.5