I had just gotten out of the scan of the alien material and went to the surface. I was attacked by an Alien who left after saying I was not the right type of human (or something like that). I think I had to reenter the game then. When I did the Alien attacked me right away and killed me. The game asked me to reenter with an X choice on my controller. Almost immediately (I tried to turn right) the game froze. Regardless of what keys I pushed nothing happened, including the Start button. Even worse the PS3 button (held down) would not work. The console was completely unresponsive and my controller was not working either. I tried to use my PS3 DVD remote, holding down the PS3 button, and it would not work. It did allow me to eject the disk however and after a few moments I got back to the PS3 startup screen.
I have not tried to restart the game but will later. But, this is obviously a serious bug in the game and was very, very frustrating. Please advise. Thank you.