Every once in a while my attempt to edit a question fails. I make an edit, click the "Save Your Edits" button, the button becomes disabled, but the refresh of the page never happens and the edits don't take.

For instance, I can't edit this question. I've tried several times over the last couple days, so it's not just a one-time glitch. Anyone else have a problem editing it? If not, why can't I?