In Ubuntu I just ran
sudo apt-get dist-upgrade and I noticed it wanted to remove
nvidia-glx for some reason (conflicting with some kernel package). I thought well, that's not good. But I let it go anyways as a sort of experiment. Then I logged out of Gnome and restarted GDM. As I thought, GDM failed to reload. I checked
/var/log/X.0.old and yeah, failure to load the nvidia module. So I
sudo apt-get install nvidia-glx and tried again and then it worked.
I tried the other day to get epsxe to work. It appears to be missing from any Ubuntu repos. But there were long threads at the Ubuntu MB detailing how to get it working. I downloaded the binary from the epsxe website and stuck it in its own dir and it worked.
I mention these because these are the worst problems I've had in Ubuntu since I installed it a few months ago. Beyond that, zero problems that come to mind at the moment. I really thought transitioning from Gentoo to Ubuntu would be problematic at least SOME of the time, but nope, smooth sailing.
I swing by the Gentoo forums sometimes, and it seems to be a lot of "RTFM n00b" or "Fix it yourself or leave, we don't care". I remember a few years back a lot of people in the forums used to harp on other distros that had many users who did that kind of thing. It's sad to see; even if it's just a loud minority, it stands out. And there's a lot of the usual "Gentoo sucks" and then the defensive counter-arguments. Maybe Gentoo is headed towards attracting an elitist sort of self-righteous userbase; that's fine, to each his/her own. It does not appeal to me however. To be fair, I have not participated at the Ubuntu forums as much as I ever did at the Gentoo forums. But I have yet to see any of the same kind of negativity there.
I think that getting rid of Gentoo really did free up an inordinate amount of time for me. You always hear the "It's only free if time is worthless!" kind of argument, and I generally tend to dismiss it, but there may be some shred of validity to it. Upgrading packages takes 5 minutes tops with Ubuntu and it tends to work right the vast majority of the time. No package breaking every 3 days, or forced complete system-rebuilds. No re-compiling PHP and mplayer 4 times a week because someone added or changed a USE flag. Etc. etc.
The free time I got from not using Gentoo has gone directly into things like studying for an exam or updating my (other) website; first time in years I've had the time to work on that site. Or just playing a game or two with my girlfriend. I've really gotten into gaming again for the first time in a long time, and it's probably no coincidence that it started right about when I ditched Gentoo.