While my stuff runs fine under Windows, I have severe problems under MacOS X (on a Mac mini Intel running MacOS X 10.4.11).
First, I had linker errors which I could only avoid by reducing the functionality of my program (and I'm talking about functions, which are officially supported under MacOS X - according to the docs).
Now, my program crashes with a "segmentation fault".
If I try to debug my code, the debugger briefly pops up and closes itself immediately - even if I place a breakpoint at the beginning of the program

Now, I have no idea how to proceed - does anybody have more experiences with PB under MacOS X?