Well, I had an unfortunate incident with my power supply connector and my original 4500. It looks like it's got a short in it. If I wiggle the plug it loses power.
Luckily, I bought this one locally and purchased a 3 year warranty (which I normally don't do). So tomorrow, I'm off to Fry's, receipt in hand for an exchange. I'm glad I had that one from the CompUSA/TigerDirect deal ready to go for my backup.