There's been bugs with bitcoin where some btc are getting reversed, not sure if it's illegal bitcoins or something... Someone paid me $9 and it didn't work, he told me this morning it got reversed and his $25 he bought from an exchanger also got reversed. I suggest waiting 1 confirmation if you are doing big transactions!!! I also saw it on my own wallet, be aware guys. Also Shadow was having this issue This is only a warning...