I just installed leopard then applied the efi patch and when the boot loader normally starts all i see is a very bright white screen. After about 15 seconds my machine reboots. I can boot to my leopard 10.5.1 install with the dvd in the driver after it times out.

My specs

amd x2 3600+
DFI Infinity Ultra2-m2 Nforce 4
1024mb DDR2 800
ATI x1300 512mb
250G Maxtor ATA 133
Leopard 10.5.1 clean install with mbr

Installed efi-v8 after clean install from dvd

Im wondering if booting from grub would help. also once booted via the dvd IORegistryExplorer does not show EFI. Does this mean EFI is not working at all or would the dvd not boot with EFI emulation? I have not installed any kexts from the EFI package. Im using the Natit Kext but its not even to the point of getting loaded so i dont think its the culprit. Any help or suggestions are appreciated.