Xbox Live Post-Maintenance Glitches

Microsoft is having glitches from yesterday's crippling maintenance. Users are unable to preorder the new Ghost Busters game, or find entire games missing from their hard drive. Oops. But, here's Microsoft's excuse-I mean "reason":

"Users may experience difficulties when attempting to use Marketplace and/or making purchases. We are aware of the problem and working to resolve the technical issues. We apologize for any inconvenience this may cause and thank you for your patience."