I have almost the exact same HW configuration as Mark (Core 2 Duo E6400, Gigabyte GA-965P-DS3 (Intel 965P Chipset), 2Gb RAM, nVidia 7300 GT, JMicron controller enabled with 250 Gb SATA drive on AHCI mode, IDE DVD-ROM and DVD-RW attached to the motherboard's only IDE port.
I've tried to start the Kubuntu 7.04 beta live system / installation dvd from both DVD Drives and the booting process stops in the same way as Mark stated.
I have almost the exact same HW configuration as Mark (Core 2 Duo E6400, Gigabyte GA-965P-DS3 (Intel 965P Chipset), 2Gb RAM, nVidia 7300 GT, JMicron controller enabled with 250 Gb SATA drive on AHCI mode, IDE DVD-ROM and DVD-RW attached to the motherboard's only IDE port.
I've tried to start the Kubuntu 7.04 beta live system / installation dvd from both DVD Drives and the booting process stops in the same way as Mark stated.