According to Bornakk, the World of Warcraft team has released a minor bug fix patch to version 3.2.2a. The small patch is necessary because these problems can't be hot-fixed. Here's a list of the issues that were addressed:

• Fixed an issue players were having with ESC key causing the Battleground queue window to close.
• Fixed an issue players were having with entering Battlegrounds while dead or in combat, while already in a Battleground.
• Fixed the Wintergrasp zone map so it now shows the status of all walls correctly.
• Fixed a crash Mac clients were experiencing with ATI driver.
• Fixed the performance of certain spells that have transparent components.