I'm not aware of any bug, but let me check with our service department to either confirm or deny that. I've seen very few cases where Netflix didn't work, where Pandora did. Usually, in my experience, it's either both or neither, and that's usually due to a network issue.
I appreciate you staying with the Samsung brand if possible. Naturally, we want this to be a good experience for you. That said, I believe that the best thing is to do what makes you the happiest. I do know that these units have had a very high demand (partially due to the Pandora feature), but you might want to work with your retailer's manager to see if you can exchange it now (within the return period) and pick up the replacement when it arrives. Various stores will do various things.
Maybe other members will have some ideas too.