so far i have had three nook hd+ machines and have had to return all three of them. the reason for this is if i put more then 2000 books on the nook the library will freeze up tight. have recived an error message of the active library is not responding close it or wait. my nook tablet that came out before the nook hd's works just fine without freezing up and it has 7000+ books on it. any ideas on how to solve this i really want a hd+ have tried everything the store nook tech said to do. tried with my sd card which was formatted by the nook hd+, tried it without the sd card with my sideloaded books going to primary storage on the nook. and nothing changes. please help am desperate. many thanks.