Windows XP & Ubuntu Linux

vista on my laptop (only because the same laptop with xp installed costs $100 more)

xp on my desktop

mac system 6.07 on my classic macintosh 

Windows 2000, then XP and now Vista (32-bit)

still XP I don't wanna use Vista just yet. There are a lot of programs I use that don't support Vista.

Win XP professional with SP2. Won't be using Vista for a while. After all Microsoft will be releasing SP3 for XP which means they will support it for a while longer.

Desktop - Win XP Pro (SP2)
Laptop - Win XP Pro (SP2)

Before I built my Desktop I tried Vista Ultimate on my Laptop and performance went down the tubes. It's a 2.13ghz Pentium-M, 1gb, 60gb 7.2k rpm, 128MB Radeon X700 15" (1680x1050) laptop from late 2005. I removed that bastard pretty quickly and re-installed XP. Generally, I prefer Win2K Pro over XP, but support is not the best for it anymore... :(

Whenever, I get a new laptop I'll most likely go with a Macbook or Macbook Pro. Haven't really used Macs too much since I was in school, but I like my sister's Macbook.

nothing special. I upgraded it for hardware support (bluetooth support is much better, and both headphone jacks on my laptop finally work)

I run ubuntu hardy beta on my laptop, ubuntu dapper drake on my server (yeah, it's old, so what), xp on mum's pc and osx on dad's pc.

Windows XP on both my laptop and desktop.

PCLinuxOS (Linux) at work and home. On the desktops and laptops.

i use vista, it's so great compared to xp...