Last time I tried Fedora (it was maybe 3 years ago), I tried to play an MP3 on my thumb drive and it failed to do so, then asked me to pay money for an MP3 codec license.
10.04 is still the best Ubuntu, if newcomers to Linux want simplicity and usability that's what I recommend whether they're not very tech savvy or programmers. I still use it on my work laptop. (I've been using Gentoo on my home devices since 2007 or so.) The .deb model of packaging is sane, Ubuntu just can't be trusted anymore with what comes installed out of the box and what's available to install/uninstall out of the box.
I'm still looking for a good Ubuntu/Debian derivative that's at least as good as 10.04. Xubuntu is always a "good enough" option in many respects. A lot of people recommend Mint and I don't see why. But I'm also very biased in favor of Gnome2.
I used 10.04 for quite a long time and am now on 11.10 without Unity, I grew quite tired of always having incredibly outdated packages on 10.04 (the great utility of "sudo apt-get install and it will always just work" being the only reason I haven't switched to Windows or Mac yet). That being said I still use 10.04 on all of my servers
So? If you are used to Ubuntu's filesystem layout, package management, etc. it makes much more sense to go for Debian or a well-maintained Ubuntu distribution such as Mint. Also, Mint has gnome-shell and Nautilus forks that bring back a lot of sanity.
Anyway, this is all a non-discussion for an experienced user, since the lens can be removed easily. Also, Ubuntu 12.10 is still beta, so they might still remove this functionality or make a separate shopping lens, or whatever.
I'm on a recently installed Fedora. I figured that it would be what I would settle with once I got tired of fiddling with things on Arch. A pretty good selling point was that it would readily handle our dual scanner and printer without me having to deal with the HPLIP software package, but I suppose this is a somewhat appropriate occasion to rant on a few bits. Some of them may be related to software Fedora is composed of, such as Gnome 3.
Non-administators can't add a password through the graphical dialogue if they are currently without password. "Choose password at next login" was the next best option for fellow family members interested in trying out Linux.
The infamous obscurity of the power off and restart buttons. You can read all about it on Google. Family members are sure to reach for the physical power off button and do cold shut downs once they want to use Windows.
The Firewall thing assured me that SSH is a trusted protocol, but incoming SSH connections were met with "No route to host." Disabling the Firewall fixed this.
Selecting Terminal in Activities gives focus to a currently open Terminal. Opening new Terminals can be done through the File dialogue.
Entering a non-existing command results in a very noticeable delay before the prompt returns.
I haven't found a way to enable focus follows mouse. Instructions on the web seem outdated.
I was met with a confusing "Enter password to unlock login keyring" window when trying to set up instant messaging accounts. I'm not sure, but it may have something to do with my changing from the original Fedora user password, or with using passwd. Empathy didn't really work out for me because of detail-lacking connection error messages.
These are some of the surprises I have encountered during the first day of working on it. I will probably stick with it for quite a while as it is acceptable to work on.