This is just my opinion, why do we need acpi support in the linux kernel? I've had issues with it on almost every system i've loaded linux on. I don't see the point of having something like this in the kernel if it is going to cause issues. What issues you ask, well to start with, I installed Ubuntu on my dual processor system and everything loaded fine but when I got to the desktop I ran top and noticed that I only had one cpu. I did a lot of research and finally found out by going into my log files that it was the acpi that wan't detecting both cpus. So with a little further research I found out that you can put acpi=off in your kernel line in grub, worked perfect. On my laptop I installed Ubuntu and it installed fine but when I got to the desktop I found both my wireless card and network card wouldn't get an ip. So i did the acpi=off again and worked again. So I guess I'm asking, why do we need something in linux that obviously has issues and isn't needed to the os to function? I have yet to get an answer to this question, so if anyone else has an opinion or an answer, let me know.