@calisun
Thanks for the link. I actually did the A series steps the first time I installed Wordpress in an iBay. It worked out great. I did similar steps this time to move the current contrib to an iBay and I'm about ready to test it out. The good news is if I muck it up, I've got the original wordpress install with the developer's data included. I'm going to do your steps A2 and A3 for the remainder of my SEO setup so google can properly index the site. Thanks for doing this. The only reason I didn't keep the install and tried the contrib is I couldn't get the automatic update to work. Thanks for clarifying this. I may put a line or two in the wiki explaining this for future victims.
When I was reading about Wordpress I found the manual upgrade instructions on their site and it looks like they want you to deactivate all of the plugins and replace everything but the content directories with the new version. Now that I have Wordpress in it's own iBay, I may just experiment with the manual upgrade process. There are like 15 plugins currently being used by the site so it may take some time to do the core and the plugins.
Have you run into any issues with using /tmp for phpbasedir? The only reason I'm asking is I've read on the wiki and forums to have separate /tmp locations for each webapp for "security".
Your page on wordpress multi-site is awesome by the way. Thanks for the comments.