I just bought a slot-loading blueberry iMac, 350 Mhz, G3, 6 GB hard drive, 128 MB ram on eBay, as a back-up machine for my home-office. According to the seller it's running OS 10.3.5. Any views on how a fairly old iMac like this one will perform running OS X ? (I'm waiting for it to be delivered so haven't tested it out yet.) Really, I should have asked this question before I bought it but that's the trouble with eBay: you just find yourself bidding!