Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you may not be able to execute some actions.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
Step 1: Click Stop
Step 2: Successful!
Step 3: Profit!
Edit: Did I mention that the update never actually installs if you let it sit for say 30 minutes?