No issues with mine either, though I've only had the 3910 for a week, and the 3805 for a month.
While on the subject is sacd and Dvd-A the only stuff that cannot pass over the Denon Link? Regular DVD videos should, with DD 5.1 or DTS, correct?
Sorry, I haven't had much time yet to sit, fiddle with it, and enjoy!
Mike
Seattle, WA