I’ll probably skip 19. I’ll wait until 18 is EOL, then upgrade again.
The fedup upgrade utility worked great for me from 17 to 18. The only consistent theme I’ve seen was that folks with encrypted disks had some problems. I’m sure there were other odd errors but I didn’t have any problems.
Well scratch that. I upgraded two machines. On the laptop I have a custom command line that blacklists the nouveau driver and sets noapic which works around the BIOS settings I have for virtualization. During the upgrade procedure these command line bits got lost and the machine wouldn’t boot and it wasn’t immediately clear why. But that was user error and I now have my system set up such that my command line config won’t get hammered by an upgrade.
I’m actually looking forward to Gnome 3.8 as it promises some nice enhancements. I’ve also come to sort of embrace the every 6 month upgrade paradigm whereas I used to fear it. Technology is always moving forward and one might as well accept it even embrace it!