I am so upset. I have tried everything! I repaired the disk permissions. I deleted the .plist files in my ~/Library/Preferences/ folder. I also reinstalled the game. That didn't do a thing. I ran an extended hardware test and it seems that I have no problems with the hardware. I thought it may be something to do with the 10.6.8 update, so I installed the snow leopard and updated to 10.6.7 and it didn't help! I contacted the Blizzard support and they keep sending me pre written suggestions that are useless. I DON'T KNOW WHAT TO DO! I am posting to various tech forums, so may be there is someone who can help me fix the issue!