It has made BGs practically unplayable for anyone with the Mac client. I routinely crash 3-4 times per hour due to this bug, which is incredibly frustrating in a CTF match and is very costly to Rogues who have to constantly repoison their weapons.
If this issue isn't emegency patched, it basically means Mac gamers get screwed this weekend.
http://www.WoWZoot.org "SAtFoF"