Folding overpair in first orbit

GAME #727705957: Texas Hold'em NL $0.25/$0.50 2007-11-18 22:06:46
Table Cynthiana
Seat 1: nilousse52 ($27.20 in chips)
Seat 3: Hero ($49.75 in chips) DEALER
Seat 5: Ed175111 ($48.00 in chips)
Seat 6: dans75 ($35.60 in chips)
Seat 8: gngdd ($54.64 in chips)
Seat 10: krist76 ($23.00 in chips)
Ed175111: Post SB $0.25
dans75: Post BB $0.50
*** HOLE CARDS ***
Dealt to Hero [Jd Jh]
gngdd: Fold
krist76: Call $0.50
nilousse52: Fold
Hero: Raise $2.50
Ed175111: Call $2.25
dans75: Fold
krist76: Fold
*** FLOP *** [9d 4d 3s]
Ed175111: Bet $4.00
Hero: Raise $12.00
Ed175111: Allin $41.50
Hero: ???

As mentioned, this was first orbit and neither of us had done anything. No previous history.