Recently bought 80hr HughesTivo unit on ebay as my old one quit. Works fine but Onlys records one at a time. My other did 2 at the same time. The software in this one is 6.2 (my other is 6.3) so I am sure it is a software issure. However, direct tv tells me there is nothing they can do and to call tivo and tivo tells me it must come from Directv. Has anyone had this problems and do you have any suggestions?