I am unable to unsubscribe from this question. Clicking on "subscribe" is supposed to bring up an "unsubscribe" option, but it's not there.
Try the old standby of refreshing the page and clicking again (or attempting the action later)—hopefully the option will appear for you. When I click "Subscribe," I get a dropdown with two options: "Unsubscribe" and "Subscribe to RSS Feed."
I'm just about to unsubscribe myself since this is simply turning into a list of people who have the same problem but no responses or resolutions from anyone with any power... <;]