I am also using Firefox and have noticed the same thing about unsolved games sneaking in there. Yesterday, it seemed like my computer just wasn't responding and I know I clicked the play button again, because I thought maybe I hadn't hit it long enough. After about 6 minutes of play, I went to check my stats and there were two unsolved games. It is a bit of a pain, because those games add a lot to time. I'm just glad that I try to check every five minutes or so. Oh well....