I personally installed Ubuntu as my second linux operating system, after taking a few college courses (computer science), and reading up on material on how a unix-like operating system works, I decided to install arch linux. I have to say that I've learned more from one arch install (and I actually mean bringing the system online into a working environment, with a login manager, graphical desktop manager, and all the software I needed for a day to day basis. I barely learned anything at all from my Ubuntu installs, all the "hard" stuff was taken care of for me.
I never had to blacklist a module, compile a kernel, compile my video card driver, edit configuration files, or even work without a desktop manager. So i was wondering what experiences other people had.
Have you learned anything by using Ubuntu?