Earlier this week Valve advertised Half-Life 2 for the Mac with the best advert I have ever seen. They took the old 1984 Mac advert and re-created it using the source engine and characters from the game. As if the awesome(albeit 35 second) entertainment wasn't enough they offered the game at $3.40 for a limited period. It was not shortly afterwards that I made my first ever purchase on Steam(its kind of strange buying a game and not getting a box with it). The game purchase actually allows you to download the OSX or Windows version of the game , depending on the platform you are logged in to .This is great , because I have a PC with some decent gaming power and my Mac Mini (which I naturally wanted to test on) and wow ,the OSX version runs pretty darn well,especially considering that my mac mini is running only an intel HD3000. The current specs of my Mac Mini, the only non standard thing here is that I installed 8GB of Transcend Memory Performance I was surpr