What linux distro are you using?

Mint with Mate overlay.

right now im using mint 15 mate edition, but that changes frequently (im a hopeless distro hopper)

Fedora 18 + Ubuntu 13.04 + Xiaopan 0.4.6

I'm using Manjaro OpenBOX. Pretty cute and comfortable for a slightly experienced/medium user as myself.

Xubuntu :)

i try ubuntu, but prefer windows

Mint and Ubuntu (but not with Unity but LXDE or Cinnamon) I have several computers and setups, but nowdays I stick with debian

I wouldn't run neither of them.
openSUSE 13.1 KDE is sweet! A very mature and functional system.

I've always been a huge Arch fan. The problem is,I don't have the time to install and maintain it these days.

So I'm trying Manjaro. Very, very convincing so far. The XFCE version is light, quick to install, and includes everything I want from the start, apart from quodlibet (but I've yet to see a distro with that player included). And yes, that includes Steam and the nVidia blob.
Love it. :)

I mostly use CentOS... I can't stand any debian based distro for a long time.

In my office I use SuSe for almost everything.

I use Gentoo. I like pain :)

SteamOS :D:DD:D:D:D:D

Ubuntu. Though, I'm thinking of switching to another distro. I just have no idea which one would be suitable for me.

I sometimes use mint, but it keeps crashing for whatever reason :o

elementary OS (and I've tried a lot of linux distros). With the upcoming new version (0.3 Isis) it will be even better.

I'm running Mint 64bit with zen kernel and KDE 4. I haven't run into any big problems with it yet.

Arch Linux is my choice since 2010 + Win XP.

Mint.
When it comes to Linux, imho, Debian based or forget it.

Ubuntu

Arch

Ubuntu atm beacause i needed something out of the box quick at some point and didn't bother changing since, but my favorites are archlinux and crunchbang, as well as kali and tails.

Windows 7

Ubuntu 14.04 LTS

Elementary OS + Linux Mint 17 Mate + CentOS (on my server).

I'm dual booting ElementaryOS with Windows 8.1

Mint 16, downloaded 17 but haven't initiated a new installation as of yet.