My slave PC has 7 32bit, its like the server for the home network just storing downloads and music.

Both my laptops have 7 64bit

Both the tennants upstiars have 7 64bit on their laptops.

Everyone has wireless access to the storage on the server downstairs. It is awesome, I love this OS

 

I've got a whole bunch of PC's and laptops and since I'm living at home for a while (and since I built most of them) I'm including my brother's and parent's PC's.

Main Desktop: Windows 7 Ultimate 64bit
Brother's Desktop: Windows 7 Ultimate 64bit
Media PC: Dual boot: Windows 7 Ultimate 64bit/XBMC Live OS
Parent's PC: Windows XP
Main Laptop: Windows 7 Home Premium 64bit
Secondary Laptop: Windows XP
Homebuilt Router (hey its made from PC guts so it counts): ClearOS

 

Windows 7/ FreeBSD

all my servers are either centos/freebsd

 

My desktop is running XP and has little to no issues (after I took Vista off of course). Then we have two laptops in the house running 7 and from what I see 7 is fairly issue free... so far.

 

laptop is Dual booting windows 7 ultimate/64 bit and Mandriva 2010 powerpack

Ps3 dual boots Kubunto 10.04 and the ps3 OS