I'm not the site tech, Sir.. but, if I may, have you checked the little "remember me" box when you log in? I know mine will sometimes do that if I haven't checked it.

I keep getting kicked out too, but in a different way. I'll attempt to refresh the screen, and it will time out and give me a white screen with an error message on it at times. I should make a point of copying the error message at some point to see if others are having the same issue. It seems to be happening less often, but it's still happening. When it happens, I've noticed if I wait a bit and refresh again it will come back.