I was playing game 106339605 on frankfurt (my ID is Scott S). I submitted an undo request which my opponent seemed not to be answering. After a while the "Undo request was denied" message appeared at the exact same time that the popup appeared saying that I had resigned. Don't know if this was somehow a trick of my opponent to make the game time out on me, but I certainly had no intention of resigning. I was waiting on them to answer the undo request the whole time.