When booting 2007.0 on my UP1500 it hangs after saying.... Detected 1 EV68AL CPU(s) in a UP1500 796 MHz system I have to reboot and specify "nodetect" for it to be able to get to a commandprompt. Reproducible: Always
Can you try a 2008.0 Beta 1 CD and see if it works?
I was unable to reproduce with 2008.0. I didn't try 2007.0, but if 2008.0 works, then there's no reason to use 2007.0. Please mark as fixed.
FYI, it _does_ hang with 2007.0.