I spent a loong time running around the Bronze Doors area with my Mac client. Everything worked as well as any other region, with a couple of exceptions:
1) If I face the waterfall and Eagle's Head, even through a cliff such as if I am down by the crossroads, the client slows to a jittery crawl. I just figured something about the complexity of that area of the region. So this is problematic because it is how you are facing when when you load into the area. Also, one has no idea of the SCALE when you first load into the BD, so it is hard to grasp what should be happening.
2) The mountain to the right of the entrance or the cliffs or something creates a huge black shadow that covers the area in front of the entrance for quite a way, this could make you think you had missed an update when combined with the stuttering. It was very hard to initially run a aways forward, but when I turned left and started exploring everything went fine. But it would stutter if I turned within a couple of degrees of the Eagle's Head. I dealt with this by facing away when I could, and walking looking pretty much straight down.
However, I was able to explore everything to the left of the entrance, through the caves and up to the castle and Eagle's Head. I was VERY impressed with how the client handled this area, with the complexity and BEAUTY of it. That is some high-quality modeling, whoever did that. When I got to the point on the cliff that I could see ALL the way back to the entrance, it took my breath away. The SCALE in the BD is awesome, and the way the crystal comes down to the top of the cliffs looks great. By the way: 512 RAM, OS 10.4.6, 1.5 Gig PowerPC G4.
Since it looks like -- after just a quick glance at your crash report -- that the Crystal Space engine is having the crash. Perhaps you could try uninstalling the old Crystal Space and reinstalling. I have not had to do that, but I have seen it listed up here as a potential fix for wierd crashes with the Mac client.
[Apparently the big black shadow I am talking about above can be fixed by doing a relight on the maps, FYI. And thanks for the edit work today, Karyuu]