I bought the unit last april 2009 I was so excited but to my demise the brand new unit was teribly defective. It could not recognize or sense the battery, so I have to always plug it to an electical socket. After several complaints, it was replced, but again it is defective. And sad thing is I feel they replaced me with a returned unit that they just fixed. a) the serial number of the unit does not match the serial number on the box. b) they put a generic Sanyo battery on it not the original battery with the Acer logo embeded on it. c) It already has a different user name on it. d) the casing is warped!! e) I have to always use the recovery disk, because it just blacked for no reason at all for the 5th time. All of this could be verified by a fourth neutral party. Sad to say I am not the only one experiencing this problem, but I am the one is voicing this.