Today I got 9:45:35 for solving the 20 games of the event, thats impossible. Of course that what happened was that I started a game and then I had to close the game on a rush to attend to something urgent. I returned to solitaire 8 hours later... guess what happened...
I once had a similar issue when I was on an airport and had to board the plane and on a rush closed the laptop (it entered hibernation), when I resumed the computer... the game was still counting the time, so the specific challenge had a terrible time.
I have repeatedly had the same experience and it just happened again! It is so infuriating!
I was playing today's Tournament and was one game from completing it. I suddenly had to stop playing because of a household problem. I shutdown the game and come back later. I checked the time and it says I have been playing for over 9 hours! Of course, I hadn't.
People keep posting this problem but there appears to be no solution. It just ruins the game for you when this happens.
I did some investigation and noticed one interesting thing. I shut down the game then go to Task Manager. It still shows the game as running even when I have it completely closed! So now I also kill the Microsoft Solitaire task. That seemed to take care of the issue AND I did not do that today. Is that why I get 9 hours? Some background process that does not quit?
I do not know if this is a solution - i just mention my observation. For all I know, it is installing updates. If someone from Microsoft has another explanation, I would like to hear it.