Updated October 30 at 11:26 am ET
If you are viewing the website in Explorer, you my get a pop up message saying “Message from Webpage: Stack Overflow at line: 115.” Working to fix this now. If you are able in the meantime to use another browser like Firefox, Chrome or Safari, you should avoid the problem.
Sorry for the inconvenience.
UPDATE: Technicians continue to work on this problem. I would note that Internet Explorer users who update to the latest version may avoid seeing the message. Thanks for you patience and again, my apologies.