Wow isn't going through a major conversion and growing pains though. People need to remember the huge influx of new players because of the F2P conversion and everything else. There's going to be downtime and maintenance for awhile because of that. It's no one's fault.
Its something they should have expected and anticipated and planned for and made the adjustments to 'deal' with it on a scale 3x what was expected, when you make such a large change to a game its a must.