I have an older PC with a 1.3GHz AMD processor and 256MB of RAM. Knoppix LiveCD runs fine on this machine as well as a Knoppix HD install that I tried just today. Other distros, including Debian (Sarge and Etch) installs that I have done, will run for a few minutes and then the system hangs. I have 2 versions of KNoppix, 3.8 with has kernel 2.6.8 and 5.10 which has 2.6.19. Both work fine. I have tried adding noacpi to the boot options on other distros, such as Ubuntu liveCD without any luck. What is different about Knoppix?