After a certain amount of time, let's say about 2 minutes my game window and all other browser windows will close.
I had this problem both with Black Sheep and a guest.

It may be a problem with my browser (Mozilla Firefox), but I doubt it, since I never had problems with it before. I reinstalled it a couple of times, installed an older version, nothing helped.

Hope there's some kind of solution for this problem.
Regards,

Black Sheep

PS: I'd like to tell Veriac that I am not Elrick. He used my account for a while when I didn't need it, but now it is 100% mine again. So please don't ban both Elrick and me for playing eachother.. Thanks.