Also not to derail your sales thread, but your mention of the XPS M1330 caught my attention.
I'm a former owner of an M1330, and that remains the worst laptop I've ever owned. During the time I had it, the motherboard was replaced twice (the power port wasn't receiving power from the adapter), the screen 3 times (the keyboard marked up the screen badly), and the touchpad buttons 3 times as well. After having to get it repaired in 3 straight months, I finally chewed Dell out enough that they replaced the unit with a Studio XPS 13 - which has had no issues in the 8 months I've had it.
I hope for your sake that you have a warranty on that m1330!