Re: Kate Stewart in Day of the Doctor (SPOILERS!)
To say the dating of the 7.0 episodes was problematic would be a gross understatement. Hell, I'm of the opinion that A Town Called Mercy should have aired after The Power of Three. While it's hardly the first time Doctor Who has had trouble with dates, it is a pretty good example of how sloppy 7.0 was, IMO.
"Internet message boards aren't as funny today as they were ten years ago. I've stopped reading new posts." -The Simpsons 20th anniversary special.