I've been in the process of porting my game code over from PPC2002 to PPC2003, and it got me thinking about the quirky compatibility problems that could pop up. I was thinking that maybe we could all share little bits of port-over advice...any problems we have seen in porting from 2002 to 2003 or even device-specific problems.
I figure its better to hear about them in advance than have weird problems down the line that may or may not be related to the code. :)