I have just bought a DS213+, and I decided (possibly foolishly) to use the current public beta of DSM 4.2 (no update from previous version).
My problem is that files copied from my Windows 7 computer to the NAS end up being owned by root on the NAS. This is a problem because it totally screws up the quota (and reports) system on the NAS. I haven't done anything special on the NAS, just installed and set it up with basic options. I'm surprised about this issue, and on my old NAS (Readynas DUO v1), file ownership ends up correctly when copied (same computer).
I also noticed another strange thing: I tried accessing the NAS from my Android phone with ES File Explorer, and files written to the NAS from the phone actually gets the correct ownership.
I have also written about this problem on Synology's community forums
, but no answers there, so I'm hoping to have better luck here.