Have had my MediaRoom PVR since mid February and started filling it with recordings mainly from PBS HD. It's been down to the 10-17% available space for a few months. Went away for a week and when I came back, got around to watching the recordings. Most of them that did play were showing blank (black screen). Rebooted the system (via the menu) and found that just about 3/4 of the recordingas vanished from the recorded menu. Not terribly upset as I can get most of them from different sources but just a heads up not to get too attached to what you have stored and not watched. Only real big burp so far.