I upgraded to Feisty Fawn a few days ago. It was quite a smooth process as compared to the previous release. The upgrade tool on the DVD was crashing, so I used the commandline instead.
Apart from Samba breaking, (which I managed to fix in a few hours), everything went quite well. My thanks to the Ubuntu team for a nice release.
Downloading the DVD was quite a waste. Inspite of spending a week downloading 4.3 GB, I still had to download another 400MB. Next time, I'm sticking to solely to apt-get.