I'm writing this from my new (refurb) 20" 1.8ghz iMac as well. I was all ready to dime up the $1799 for a new one, but after the Mactel announcement I just couldn't bring myself to spend that kind of cash on something that I might want to replace in 2 years (versus my usual 4-5 years per Mac). I opened the box, went to install my 512mb of ram from crucial.com, and noticed that there was already 512mb in there (supposed to have 256!). So I add te extra anyway, boot it up, and.... Kernel panic! After three more panics within an hour, I pull out the crucial ram and it's been flawless ever since. I've yet to try Tiger, but 10.3.9 is a nice upgrade (I was running 10.2.x on my G4 450). I also noticed that I've got a 250gb HD instead of the 160gb that was supposed to come with it! I couldn't be happier with my $1399 purchase. Now I just have to return my DOA, unnecessary ram to crucial.com. 😀