Uni/Spud1 - thanks, that's all useful information. Like I said, I'm quite interested in OS X - just a damned, damned shame that I can't get it (legally) on the Dell D620 that I've got here.

As you say - I'll just have to keep an eye on eBay. C2D basis doesn't worry me - I've got that Dell running Ubuntu (and a shed load of VM's on top on that Ubuntu install) - and it's plenty fast enough.