So the other week my beloved 2005FPW's USB ports quit working. Not a big deal, I called dell and they shipped me a replacement. When I opened the box I got a surprise - it was a 2007WFP, not a 2005FPW. The only reason I'm worried is that I've heard about issues with the 2007 model. The sticker on the back says REV A03, but the sticker has been placed on top of what I'm assuming is an older revision number. Should I be worried?