I have the exact same problem with lockups during installation of Edgy i386 on a HP Pavilion AMD64 PC.
The computer has an Amethyst motherboard and Phoenix BIOS, so the problem is not restricted to ASUS motherboards.
I previously had to install dapper with -nodma, to avoid lockups when mounting CD-ROMs.
I have the exact same problem with lockups during installation of Edgy i386 on a HP Pavilion AMD64 PC.
The computer has an Amethyst motherboard and Phoenix
BIOS, so the problem is not restricted to ASUS motherboards.
I previously had to install dapper with -nodma, to avoid
lockups when mounting CD-ROMs.