i run linux on my laptop and debian (partly for my server) on my desktop altho there pretty much the same...windows vista sucks big time
Currently running WinXP. I've tried Linux a couple of times, but I can't stand all the messing about with drivers, codecs and stuff..
Mac OS X (times 3) with XP running in a window. Also run a noisy native XP machine in the back room as a chess analyzer.
I use Vista Ultimate on the mainframe, Windows XP Pro on the subframe, Fedora 10 on the server, Vista Home on the laptop. I use Vista Ultimate because I paid money for it, and I need to find something better for the server, Fedora 10 is too new....
Till date I have used Windows 95, Windows 98, Windows 2000, Vista, Xp and Linux(Ubuntu, Ubuntu Studio, Slitaz, Kubuntu, Xubuntu). Currently using Xubuntu and will something new after few months. Let me mess up my computer first. I am awesome at it.
I use window XP, I like it much better than Window vista. They are developing window 7 now. Some people downloaded the beta version of window 7, they say it's almost the same as window vista.
XP SP3 here too on both Desktop and Laptop. I tried to use Vista for 2-3 Months on my Laptop with 1,5GB Ram and it was a nightmare....