A variety of Asus motherboards I have used in personal applications have had some smaller issues with Linux running on them. These were driver related issues that were due to the firmware on the motherboard. Asus did update their firmware to support Linux drivers, but updating firmware is not my favorite thing to do. I can't say much for any other MB's or any other manufacturers for that matter, but that's just one small thought. Juan Children's Hospital of Philadelphia Bioinformatics Core