I have tried a lot of different Linux distro’s, they all have iso’s you can put on a CD. But this would take a crazy number of CD’s. There are ways to put a distro on a USB flash drive yourself see pendrivelinux.com. What if you just don’t want to bother with installing different pieces of software to get the USB flash drive to boot?
Some good news for AR424x users. Intrepid Ibex the new version of (K)Ubuntu will support the AR242x natively. This means non of the work a rounds are necessary any more. At least we hope that they will not be.