I recently moved my home machine from Windows to Linux. After a little research, I picked Ubuntu 11.10 (with Unity).
The installation went by pretty smoothly, everything seemed to work out of the box. The only manual configuration I had to do was to teach my Linux box to ping my Windows laptop. So far so good.
Then, 2 weeks later, my disk went out of space.
Turns out Ubuntu has a hidden log file that logs errors, with no sanity checks on size, and it hit 300+ GB.
In addition, flash still isn't smooth in full screen.
Easy to install and use? Reasonably so. Ready for prime time? I think not.