Why reinstall if you can still boot 10.5 Leopard?!

Remove that kext and Boot Chaches (/System/Library/Chaches/com.apple.kext.chaches folder) and be happy. I still recommend you to fix this by injecting fixed DSDT table as I mentioned in my first posting, anyway "----ed up" is no description of the problem that occurs.

The KP problem with the -x32 doesn't happen when you boot it using the flag manually? Strange... Propably you should upgrade your bootloader to latest PC_EFI or Chameleon or try to rebuild the Extensions.mkext for /Extra/Extensions manually, slimed down to i386 architecute - for example using this frontend: https://www.apple.com/downloads/maco...mkexttool.html

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