Every time I go to watch Netflix on the iPad I need to sign in again. It's been happening for a couple of months now. I use Unotelly so suspect this may be the issue. Although it doesn't happen on any other device.
I have the same issue, and also it loses the link to the show half way through occasionally (I can't recall the exact error message). Very annoying when I'm trying to keep my two year old occupied while I doze at stupid o'clock in the morning.