My Snow Leopard boots only with -f arch=i386

Hey Guys. I installed Snow Leopard, installed the Combo Update, Legacy Kernel and Chameleon Bootloader.
But now, i can only boot with this Bootflags. And if i bootet in there, I have no Network and so on. Can someone help me?
Sorry for my bad English, but i normally speak German.

Does nobody know some solution?

How about an explanation of your system? It would help if you gave us some sort of info other than the symptoms.