I believe that there is a design (firmware?) issue with this drive model. I have a couple of these ST2000DL003-9VT166 drives with the CC32 firmware version, and I'm seeing this FLUSH CACHE EXT error a lot. Reports of these drives failing are cropping up: http://www.readynas.com/forum/viewtopic.php?f=65&t=51496 http://forum.qnap.com/viewtopic.php?f=182&t=39893&start=225 Drive owners probably have to harass Seagate to fix this. I doubt that an RMA would help. Javeed