Just out of curiosity, why are you running 3.13 (latest kernel) on a linux distribution that is over 3 years old. Wouldn't it be better to be running Ubuntu 12.04 (latest LTS release) versus 10.04 (a full 2 years older than the latest LTS)? At least if you're going to be testing the newest kernels. Just a thought. Then again, I can't recall if Ubuntu dropped support for PPC or not. If so, I'd switch to Debian Wheezy.
slaapliedje
P.S. Very jealous, wish I could afford an Amiga One X1000