I just boot from disk so I can get the upgrade done as quickly as possible. This way, my machine does everything it needs to upgrade, without anything else goi

I just boot from disk so I can get the upgrade done as quickly as possible. This way, my machine does everything it needs to upgrade, without anything else going on. Then when its done, I let it update in the background while I make sure everything went smoothly. In this case, it went very smoothly for me, and was worth the hassle. I upgraded from Ubuntu 11.04, which had been rather a bit of a mess actually, in the Unity/Gnome3/fvwm shell department, as in I had them all and had to switch around to get certain things I liked. Unity crashed too often (in 11.04) for me to trust it. That has all changed. I am now running Ubuntu studio, which features fvwm, and nothing else. Gnome only if I truly need it, and Unity .. after the dust settles. So I'm quite comfortable in my upgrade to 12.04, and everything works like it should - full multi-channel digital audio, multi-monitor support with acceleration, and so on.