Xbox Live back up and running after Christmas hack

Gamers able to log on again after Christmas Eve attack on Xbox and PlayStation networks leave millions twiddling thumbsMillions of people were able to use their games consoles again on Boxing Day after Microsoft overcame an apparent cyber-attack and restored its Xbox Live platform. But customers on the Sony PlayStation network continued to have problems with its services following a parallel attack.A group calling itself Lizard Squad claimed responsibility for bringing down both networks on Chri