I have 2 522 dvr's. twice this week, both 522 start flashing that the hard drive is full, then it stops ercording what ever program it is recording. The messages slowly starts to appear, flashin very fast then it just appears and stops recording. Both my 522's have done this several times in the past week. The only wierd thing is, that both have at least 65 hours left of unused hard drive space. I dont have too much saved on either. It says to start deleting programs to make space. This does not make sense. Could it be a software flaw?? Anyone else having this problem before I put a call into DISH. My one dvr is 3 years old, the other I just got a month ago when it replaced my 721.