After a tumultuous day of fixing Wintergrasp, Blizzard has decided to disable it again due to a new issue conceived in the womb of fast-development. This is not a repeat from earlier, this is a newly-made, fresh off the compiler error. Not only that, but all arenas will be disabled until they can get the points to count correctly.

"With the release of patch 3.0.8 we have implemented a new matchmaking system for arenas that will improve the overall system and help ensure that players will be matched against others of equal skill. The new matchmaking system uses a rating that you cannot see, and is separate for each of the arena brackets. The rating changes at the end of each match are affected by this new system, and as it just came out, there may initially be some odd behavior in rating changes, but these will straighten out fairly quickly. "

And if that doesn't tickle your fancy, then try not to forget the rolling restarts beginning at 5 AM Pacific Time. With all the back-and-forths, hopefully this issue will be resolved with haste.

Source: World of Warcraft Forums