Thanks. I wish I had read that post. I read another one that said that I had to reinstall from scratch and since blowing away my partitions and starting over, I've never been able to get Leopard up and running again. If I do, and if I reinstall the iPhone SDK I'll either a) not install the CHUD tools, or b) install them and then remove the kexts as your cited post suggests.

For now, I have to figure out what is preventing me from reinstalling leopard! Thanks.