I have owned my Acer Aspire 4720 for 7 months now and have experienced only one major flaw. At times when I plug in the power cord to keep the battery charged, the computer doesn't always recognize that it is plugged in. In other words, the battery light which should turn green when the cord is plugged in, remains orange for a period of time. Sometimes it takes as long as ten minutes to recognize that the cord is plugged in.

   The computer comes with Vista home premium which I have had no difficulties with. The model I have of the aspire, comes with an accelerated graphics chipset instead...