I also purchased a 2003 PDW7800. Within the first year of operation, the diverter valved failed, the water inlet solenoid failed, and then the control panel went out. Of course, these were all under warranty, but the control panel was on back order and GE informed me that it would be 3 to 6 months to get a replacement. I chalked it up to a bad purchase, and went to Lowes and purchased a 4000 Series AquaSurge Frigidaire, because it was half the price of the GE.
I knew about all the reported issues with Frigidaire dishwashers, but I only bought it until I could afford a good Bosch or Siemens. The Frigidaire is still running with no problems and does an decent job of washing the dishes, although it is far from quiet.