A lot of people I know have various issues with Compiz, for example, so I think that's fine.
Granted, it took ages for rtorrent to compile for me...

I'm running an XP SP2 Professional edition laptop.

Can't say I'm enjoying the OS though, my computer has really started to get bogged down and attempts to clean up the mess have been pretty futile. Reformatting also has turned into a non-option since the amount of data I have has now surpassed the amount of storage I have. What a predicament.

Once Leopard comes out though, I might get a Macbook Pro. They're looking great.

Here, Windows XP Professional SP2 (US) and sometimes, a brazillian version of Linux Knopix (called Kurumin).

:)

Windows XP Home Edition upstairs on desktop PC.

Mac OSX 10.4.6 Tiger everywhere I go on my Powerbook G4.

The latter has taken over completely.

Windows XP Pro SP2.

How many different OSes do people REALLY use anyway?

Windows, Mac OS X, or some variant of Linux. Everything else is pretty marginal.

Hey, that was an EASY question!

My gaming comp runs XP Pro.

My laptop runs Ubuntu but I'm going to switch it over to Gentoo here pretty soon because Ubuntu runs unbelievably slow on it - even slower than Windows XP does.

I have 3 other machines in various states of disrepair that I all run off Ubuntu Live CDs.

On my laptop I have winxp pro, while on my desktop I'm dual booting winxp and winxp64 - the 32bit os on the bigger 300gb hdd, and then xp64 on the smaller 80gb hdd.

I can definatly notice how much faster 64 bit windows loads, and how the 64bit apps run much faster.

My three desktop computers use Windows XP Pro SP2 with a server running Windows 2003 SP1 and my two laptops both with Windows XP Home.

Currently using VMware to run multiple versions of windows xp sp2 on the server to help me with my networking skills.

Yep.
Anyone here ever met an actual BSD user?

Yep, there was this guy at college who ran everything *BSD. I tried it for a few days, but felt better off with Linux. Hardware support is bad enough as it is with Linux, with BSD it must be worse.

Then again, technically anybody who uses Mac OS X is a BSD user...

Slackware Linux 10.2 with kernel 2.4.32.

Windows XP SP2 on all three of my machines, the perfect OS.
I had Ubuntu with Fluxbox on my laptop earlier, but I got sick of all the fiddling. I just want to use my OS, launch my apps, type homework, print it out and so on. Ubuntu required way more fiddling with everything, so I switched back to Windows.

I'm using Windows XP SP2 on my main computer, but our home domain controller is running SuSE 10. I like SuSE, but using Windows will probably always be more comfortable; kind of like a first language.

I'm currently using Windows XP Professional x64 Edition.

Win XP Pro 64 edition.
Win XP Home on the other computer.

Mac OS X 10.4 Tiger. I mean, is there anything else?

Oh, laptop runs XP SP2, web server runs Linux.

My home network's primary domain controller runs NT Server.
Except it doesn't.
Except I have no primary domain controller.