My Mac has a Nvidia 7300 (or Nvidia 7600) series card and I get flickering in video menus, will this effect the game?

The flickering only effects 7000 series Nvidia cards and has more chance of appearing if you stay on the main menus for many minutes at a time. The problem is caused by a bug in the drivers for the card, this may be fixed in a future OS update. The flickering will not happen during gameplay and is restricted to the video menus.