Every day that I have checked my external hard drive, after receiving 515, I have had no connection. So I have to reboot my hopper in order to see my external hard drive again. Did it again this morning .
Now that's really weird! I had that problem with most if not all of the PREVIOUS versions, now on 515 it's working fine (so far.)
Previous two Hoppers were version NDGD, new one is something different but I don't remember what. (My brain always wants to read NDGD as NGDG for No God-Damned Good, which is what they were. First one lost a hard drive after a year, second one didn't even make it past install without having the satellite signal or LNB power or something cut out at random.)