Yeah,
I took it like 6 times and once it was an ENFP...I guess I was feeling extremely happy.
I would say take it at different times etc. Personally, I found that the only thing changing for me was the E and the I (am I cranky or am I friendly :) )
ENFP is one of the sides to my personality, too. Apparently we can be serious or funny at the turn of a silly switch. That's me. I guess my other side is ENFJ, like you, depending on my mood. LOL!!
http://typelogic.com/enfp.html
Hey!
Good to see there are a few of us around.