I got a refurb Mini 10v, 120GB XP, this week from the Dell Outlet. Looked brand new, except for the green sticker others mentioned.
While I upgraded the RAM to 1GB, I particularly inspected for what might have been done inside during the "refurbishment". Saw no figerprints, other than the ones I just added

, and all components had recent manufacture date codes.
As far as I can deduce, this unit only had the hard drive re-imaged w/ XP-SP3.
Go for the refurb! So far I'm in for only $229 (free shipping) for the Mini 10v, plus $19.95 for a PNY 2GB PC2-5300 (after MI rebate) from Fry's. And I'm already up and running OS X 10.5.8 with dual monitor (already had Samsung 20").