Just a little question. I've had 2, that's right 2, a/c power adapters for my xps 1530. Does ANYONE know why they keep crapping out on me? I've had the first one for a little over a year, and the second one for only about 7 months, and it just stopped working. Are 90watt adapters more likely to blow or something?...I know it's dell, but they used to make stuff that would last more than 2 years. Any input would be handy.