I really think it was a problem on the Netflix end. They were even tweeting their concerns in that same time period. Mine usually gives me no problems, but the few times it does it's always been a glitch on their end.
Do you get those QC emails from them? I mostly try to answer them and on a few occasions they've even followed up by crediting my account a little (if I reported issues) or when I was a DVD subscriber, they even sent bonus discs.
Anyway, glad it's working for you now.