2.1 -> 2.2 apt-get dist-upgrade issue... SEG FAULT

["Michael Fox" <mafox@fairfax.com.au>]

I have a slink box running on kernel 2.2.17, and I have updated my
/etc/apt/sources.list to point to potato 2.2 tree.

I have ran apt-get update.

Now if I run apt-get dist-upgrade, or anything else apt-get related other
then update... it seg faults.

Anyone care to explain what is happening?