Using Chrome, I am having this error when I refresh a page on Stack Overflow and open the developer tool:
WebSocket connection to 'ws://sockets.ny.stackexchange.com/' failed: Unexpected response code: 502 full.js?v=f9e9cb812ede:13
PS. Also, the copy/pasting feature does not work when you try to Ctrl + V to paste a print screen.
Chrome version: 29.0.1547.62 m
OS: Windows 7