Dats odd so weird... seems like the with 10.5.6 all models have different issues.
Iono if we are asking too much but I think we should pay a bit to macnut to help us with this to get some BIOS MOD from different Models, starting with urs, you are always here... Please post your latest HP Original BIOS. I will send some to Macnut for help us.
BTW I'm preparing to use Retail, this will the ultimate Tutorial, ima try all the latest distro too, ideneb, xxx and iPC... to get some answers
This is my sacrifice lol, my HDD will die XD