Hey man, I am in exactly the same situation that you are in. I moved up from 25NL to 50NL at the beginning of summer (on PokerStars), and it seems like the "camping" strategy just doesn't work as effectively. I still have made a healthy profit (around 1k), but the good runs just don't seem to come as steadily as when I was killing 25NL. The big thing that I noticed is that continuation bets get a lot less respect, even when you try to fire the 2nd or even 3rd barrell. Also, as a whole, I found the players are more aware and considerably more aggressive, although there is still a good amount of fish. Who knows, maybe this last 2 weeks/ month has just been a bad streak, but I am definitely thinking about switching sites strictly for ring purposes.

PS. I don't see any reason for you to drop down to 10NL, unless you just want to regain your confidence. If you were beating 25NL, why not just go back there?