Glad to hear someone besides me is interested in using Bitcoin on Mac OS 
I made a mistake with the PPC version that's in the binary - it's flagged for G5 only. I didn't have a way to test it.. I have an iBook G4 but I'm happy with 10.4 on it but it was easier to just build wxWidgets for 10.5/10.6 without support for 10.4. If I can get the iBook to boot off an external drive somehow I can install 10.5 to test with.. maybe a firewire drive would work. I use 10.6 Intel primarily and that is what I built with but I would like to figure out how to make it work on PPC as well.
The way Satoshi wrote this, he is using a library called wxWidgets to make it a cross-platform application. It allows the programmer to create kind of a lowest-common-denominator generic user interface and the library takes care of the native implementation like windows, GTK or Cocoa. I'm not sure if it's possible to get rid of the 'Bitcoin' (leftmost) menu in a Cocoa app, but it bothers me too since it doesn't 'fit in' right like a real native Cocoa app. I'll look into it though.
Laszlo
I made a mistake with the PPC version that's in the binary - it's flagged for G5 only. I didn't have a way to test it.. I have an iBook G4 but I'm happy with 10.4 on it but it was easier to just build wxWidgets for 10.5/10.6 without support for 10.4. If I can get the iBook to boot off an external drive somehow I can install 10.5 to test with.. maybe a firewire drive would work. I use 10.6 Intel primarily and that is what I built with but I would like to figure out how to make it work on PPC as well.
The way Satoshi wrote this, he is using a library called wxWidgets to make it a cross-platform application. It allows the programmer to create kind of a lowest-common-denominator generic user interface and the library takes care of the native implementation like windows, GTK or Cocoa. I'm not sure if it's possible to get rid of the 'Bitcoin' (leftmost) menu in a Cocoa app, but it bothers me too since it doesn't 'fit in' right like a real native Cocoa app. I'll look into it though.
Laszlo