So i'm on a MacBook pro (bought in 2008) running Mac OS X version 10.5.8 and i have all the latest software downloaded for my mac as per suggested from www.java.com in the AH bug report in game email sent out...
and yet i still cannot open the AH. I go to the AH in the game, click on attack when it tells me to in order to browse vendor good. My avatar does the AH animation that everyone else does--the weird little arm out shenanigan--but no AH menu or or anything displays. My guy just stands there unable to move doing the animation, while everything else occurs around me as if i just typed a /sit type command. I have to say this is very disappointing as i would very much like to check out the auction, and perhaps even begin selling things on the AH or buying things from the AH.
Anyhow, so until this is working for us Mac users with the above specs, the latest patch was ONLY a decreased ability to sale/purchase items (on account of an AH we can't use) and an increase in crafting costs. So far the patch is pure a loss for me.

P.S. I have 2 friends with the same model of MacBook and they both have the same problem.