I operate three desktop computers in a engineering business setting. They are networked and two use Mint 7 XFCE and one Mint 6 XFCE. All dual boot with Windows XP where CAD work can be done. Due to my tropical location (average ambient 25 degrees C.) and no air conditioning all are set up to monitor cpu temp and video card temp. I run the OSs at derated speeds or cool n quiet.
Started out with Ollivetti Mini in 1982, CPM, ZCPR, various versions of DOS, Windows 95, 98, XP, Caldera, Mandrake, Mepis, Ubuntu, Mint.
Browser: Firefox 3.0 and 3.5 on Mint and Firefox 3.5 on Windows XP
Office: Open Office on both Mint and Windows XP
Main OS: For business use Windows XP sp3+
Video: nVidia 6000 and 7200 without fans (fans quit running too soon)
Hard Drives: For OSs on two computers on OCZ SSDs. All data drives are 7200 rpm Western Digital or Seagate. Backup drives are both Western Digital or Seagate USB.
Mint is the best OS so far, but Windows XP is essential to my business.
13 Xfce, Win XP, GA-MA785GM-US2h, Athlon II X2 240, 4G mem, OCZ SSD, WD 230G, AMD 4200
13 Xfce, Win XP, N68C-5, Athlon II X2 255, 4G mem, OCZ SSD, WD 120G, nVidia 7300GS
9 Xfce, Win XP, M4A785-M, Athlon II X2 250, 4G mem, OCZ SSD, WD 1T, AMD 4200