Re: Gnome interface
Ubuntu is a fast-paced, six-monthly distro. Linux is an operating system where parts get entirely rewritten for various reasons.
To an extent, you should either get used to change, or use FreeBSD or Windows.
"It doesn't look like Gnome 2" is not a reason to refuse to use a desktop. You obviously haven't used Unity or Gnome 3 for any length of time, I suggest giving either of these desktops a real chance before running back to Mate.
Mate won't be around forever.
I try to treat the cause, not the symptom. I avoid the terminal in instructions, unless it's easier or necessary. My instructions will work within the Ubuntu system, instead of breaking or subverting it. Those are the three guarantees to the helpee.