Recovered isn't really the right word for me...
The month of April marks my first year on HP. My traffic is realitively low but has been steadily increasing despite the fact that I haven't done anything in about four or five months.
As far as Sept 2012... During that time I was very active in publishing new hubs and I saw an increase from about 70 views per day to about 140. So at the time that everyone else was complaining I was actually fairly content with my meager gains.
Since then my traffic has continued to "yo-yo" it's way gradually higher. I peaked at about 270 views per day and am currently hovering at about 210. This is probably much much less than the rest of you but it is also somewhat above my own expectations. I recieved my first payout last month and am expecting the next one to come after May.
I have wondered if the growth I've seen might have been less gradual had there not have been the panda update. But... there is really no way to know for certain.