I just purchased a AA0-150, it came with version 3310 for the BIOS. After a few tries, iDeben did not see the HD unless I formatted it with Disk Utility, I was able to install version 10.5.6. I've got Ubuntu 9.04 UNR running on it, /dev/sda2, and OSX installed on /dev/sda1 Now every time I go to boot OSX, it runs up to a point and reboots. - It's trying to load the BroadComm drivers. It's gone past the part where the screen resolution changes. I've tried the -v -x -f and cpus=1 switches, but still the same problem. I've made a unetboot USB and tried to downgrade the BIOS to 3304, however, when I select option "5" is just complains about there not being a CDROM and hangs; not input allowed from the KB. - If I wait long enough when I press a key, it just beeps to complain. The Windows partition was the first thing I killed off. Anyone have any suggestions? Thanks, Denis