Hey, just so you know ... this post is now about 15 years and 5 months old. Please keep that in mind as it very well may contain broken links and/or outdated information.
Tonight I did another in-place upgrade on my server, this time from Ubuntu 8.04 (Hardy Heron) to 8.10 (Intrepid Ibex). Like last time, I did the upgrade through PuTTY over an SSH connection and it was flawless. I just had to clean up a few configuration files and put back my installation of Gallery 2.3 (since Intrepid comes with a slightly older release). I love it when upgrades go smoothly.
Pointless side note: I upgraded to Hardy on 6/11 and upgraded to Intrepid on 11/6. 🙂
Second pointless side note: an ibex is a species of wild mountain goat.