I got in to the Hardy wiki without a problem. I did the upgrade to
Intrepid and am a very happy camper. I upgraded and it all went smoothly
(took a while) but everything is working ok. This is a post I posted on
the Kubuntu forum showing the url.

I have just completed a successful upgrade from Hardy where I had both
KDE3.* and 4.* installed as a "dual boot". I upgraded from the 3.5
version using the instructions on this site.

https://help.ubuntu.com/community/IntrepidUpgrades/Kubuntu

It gave me exact instructions and worked perfectly!!! As I said I had
both KDE 3 & 4. Intrepid made one version of KDE - version 4.*. It does
away with version 3 completely. For me this is what I wanted.
I am now having to learn to use all the nuances and candy that KDE 4
provides. I am very pleased with the results so far but I'm sure I'll be
on the forum asking questions Smiley
I'm sure it'll work ok for Ubuntu as well. I like Intrepid so far.