Ubuntu 9.04 Upgrade

This morning I upgraded my laptop operating system from Ubuntu 8.10 to 9.04.  All went smoothly and took under 2 hours (less than I feared).  I don't know exactly how long it took because I went out shopping while it was under way (there's confidence for you!) and it was waiting at the "Remove unneeded packages?" screen when I got back. 

I have only noticed one problem following the upgrade and that was the graphics in Blender no longer work.  However, as I no longer use Blender on the laptop, I just uninstalled it.  (Blender is listed as a packge from the "Universe" and so is not officially supported by Canonical Ltd.)