I have had the same results with HP, and I am now gonna try another brand, most likely Canon. I have had this unit for about 1yr, and I get the error msg for print cartridges. Went ahead and did all the cleaning, and still nothing. Called support and they wanted to send me another unit for $149 after I inly paid $119 for the current one. This is the 2nd time I received that answer from HP, as I had a Photosmart printer with a similiar problem before getting this one. Three times will not be a charm for this consumer. See ya Hp and Hello Canon.
Ex Hp customer, July 2009