I am having a bit of a problem.
First some background:
I built a reasonable BR playing NL10 during the Beginners Poker School, and extended it during a promotion playing Double-or-Nothings to get the bonus & promo payouts.
At the end of 2011, I decided I would go back to NL2, and apply what I had learned at the higher stakes, and play at each limit until I had 10K hands of +ve winrate over those hands.
It isn't working.
January and February saw negative winrates both months -- not by much, but enough to be annoying. I'm only playing about 6K hands / month due to annoying interruptions like work, family and unimportant stuff like that.
I think I might be playing TOO aggressively.
It seems that whenever I bet out, I get a rousing chorus of folds -- If I get called, and it goes to showdown, I lose.
I played a short (4 tables) session this morning:
My own stats (v/p/af 3Bet ATS) after about 60 hands each,
13/13/4 6.3 50
21/19/11 10.5 50
17/13/10 4.2 33
19/10/2 2.5 0 (no good opportunity to steal)
Yes, it is only one session, but it is fairly typical:
Here is the session graph:

Based on the above, should I be concerned?
Are there adjustments I should be making to my game?
I'll be posting some of the hands to the hand devaluation forums, but in the main, when I get beaten at showdown, I was beaten from the start.
My WTSD is only about 30%, but my W$SD is only about 40% -- seems to me it should be higher than that. Not only that, but I seem to win the small ones and lose the big ones -- but that might just be perception.