I tried 4.0 in Mandriva for about 15 minutes, before I decided to use 3.5
which was also included in the distro. After all, I thought, they did say
to wait for 4.1 if you wanted to actually use the system.
And indeed, 4.0 was unusable as desktop system, I don't see why they
needed lots of testers to reach that conclusion, they wanted the same bugs
reported a few thousand times before fixing them?
4.1 is much better, it is not a feature rich as 3.5 but it works,
unfortunately they got a weird bug that requires them to make programs
unusable in the name of usability, so I am still with 3.5
Haven't tried 4.2 yet, let's hope they got some sense back.