At this link, http://linux.pegasosppc.com/index.php?mode=library&submode=view&artarticle_id=2&artchapter_id=5
I found this informations, but the kernel link is broken. Does somebody have it please?
Q: Howto upgrade the PegXLin kernel.
A: PegXLin is not really using a debian kernel-image package, and the kernel is somewhat old by now, probably not including my latest improvement, especially concerning ethernet and MAC less boards. The best way to fix this problem would be to install the kernel-image-2.4.22 package i have made available at :
http://people.debian.org/~luther/pegasos/2.4.22/
And install it. Then you have to move the /boot/vmlinuz-2.4.22 kernel to your FFS boot partition and boot that. (you can rename it to pegxlin if you want). The kernel-image package also will install the needed modules.