I am currently on the Project Purity quest at the Jefferson Memorial and I think I have discovered a serious glitch in the game. Unfortunately, when I go into the basement to install the fuses I can not get back out. When I finish the task and go to open the door to leave the basement, the game freezes on that little clock that appears at the bottom of the screen. I then have to shut down the game console and restart from my last save. It happens every time. Please tell me that I am not the only person this is happening to. Any suggestions?