BowserHewitt: YOu might know.
It's not only me, there are others, too, with profound knowledge of the game!
BowserHewitt: it literally shuts down my game .
On PC, with a browser?
=> Looks like the known Flash-eats-memory flaw. RAM ain't released in a proper way, so it may be good to close down all browser windows sometimes to reset it. Some do it before each game...
In more difficult cases, you'd have to clear the browser and/or Flash caches, or shut down your PC.