This is a question I have been asking myself over the past week or two. Suddenly now when I start Google Chrome, it also starts Google Hangouts and logs me in. But Mike, is this not what you want? Having Facebook, Twitter, and Google+ constantly interrupting you must make you more productive? Right?
I think not. Thankfully, you can turn off the auto login part. Go to the Chrome Menu and select Settings -> Extensions -> Hangouts -> Options. Uncheck “Sign in to Hangouts when Chrome starts”
Sanity restored. Yays!!!!!