last night my 3510 recorded a new series episode of Modern Family, ch 13, 9pm PST, the latest Season 5 episode titled "A Fair to Remember: - it recorded and played back normally.
however I just noticed a duplicate of the exact same episode was recorded as well - however it is in a folder labelled Season 0. But oddly enough, the date recorded on that duplicate recording shows up as 12/31 4:00pm ch13. In all the previous times I've seen this duplicate episode bug, the extra copy has always showed up as season 0 but I've not noticed before that the date recorded was incorrect as well.
Just to make sure I wasn't imagining things and that's an old episode I forgot to delete, I checked the playback and it IS the identical new episode from yesterday, complete with commercials for the upcoming Nov 22/13 release of the new Hunger Games movie. So unless the 3510 has a new feature for time travel, this is definitely a reoccurence of the duplicate epside bug, after the update.