1. Laptop
2. Desktop
3. Workstation @ office
4. Production server which i administer.

Also, i use Ubuntu mainly in laptop. And Debian for server are the OS which i love the most.

An oooooooooold PC which I have Solaris 10 on that runs surprisingly well

A laptop which did have XP on it until I got drunk one day and though putting Vista on it would be a cool idea - which it absolutely wasn't I use Linux VM on this

And a cool little Asus Eee tablet PC which, if I can be queer for a minute, is just the cutest little thing! I have XP and Ubunto on that.

And yesterday I replied to a post using my mobile phone - which I was amazed worked, but I don't suppose that counts.

Online now:

1. main battle computer - xp based and used for home automation, communication and sync of portable devices
2. x64 box runing CentOS. Used to develop and test software (also ldap server and movie viewer )
3. old laptop running CentOS - guest machine and test platform
4. Sun Blade 100 running Solaris 10.. dying a slow death
5. Supermicro 1u server with 4 Xeon cores - runs linux and Solaris 10 depending what I need - usually Solaris 10
6. Laptop running Vista - my travel machine

Coming online soon:

1. Sun Fire 480r - Running Solaris 10 - clustering, software testing
2. 2 E450 - clustering