I've upgraded my older computer to Ubuntu 10.04, AKA "Lucid Lynx". On the whole, as with any upgrade, there's not much different, but there are a couple of problems that are starting to bug me. For one thing, since the upgrade, Ubuntu has forgotten how to work my sound card. It isn't even being detected any more. I can't remember if I did anything different to get it working in previous versions, but whatever I did, it should have carried over through the upgrade.
The other major problem is that the computer will no longer shut down. When I tell Ubuntu to shut the computer down, it logs off and won't allow anything else but to log back in. If I want to fully shut down, I have to restart, boot into Windows, then select Shut Down from there. I really don't get this one. I know my machine is a custom build, but it's got standard parts in there, and, again, this used to work.
Mokalus of Borg
PS - I haven't had much more time to poke around yet.
PPS - Or look for solutions to my problems.
Update: Both of these problems seem to have sorted themselves out together after a hard reset then immediate shutdown from the login screen.