Terrorist this and terrorist that. What about when we had to worry about enemies like Soviet Russia? They didn't need Google Earth, they had/have their own spy satellites in orbit. Maybe the brits should have just done a better job covering-up their damn base. Trust me, if the Russians knew where it was, someone in Afghanistan found out long ago.
And no, I don't think this is a problem with the higher resolution aerial photographs, spy satellites have resolutions much greater than you get with Google Earth. However, a spy satellite can't just label these locations for you, someone has to look for them in the pictures.