I felt like an idiot but how bad was it?

[Dopey]

How bad is this fold? (My thoughts at the end of the post)

Party Poker 2/4 (9 handed) converter

Preflop: Hero is UTG+1 with T[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img].
1 fold, Hero calls, MP1 calls, MP2 calls, MP3 calls, 1 fold, Button calls, SB calls, BB checks.

Flop: 9[img]/images/graemlins/club.gif[/img], 2[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(7 players)(7 SB)</font>
SB checks, BB checks, Hero bets, MP1 folds, MP2 folds, MP3 folds, Button calls, SB calls, BB calls.

Turn: 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)(5.5 BB)</font>
SB checks, BB checks, Hero bets, Button calls, SB calls, BB calls.

River: Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)(9.5 BB)</font>
SB bets, BB calls, Hero folds, Button folds.

Final Pot: 11 BB

So someone who has been calling the whole way bets into 4 players when an overcard to my top pair hits. The its called, how can I possibly overcall.

Given how easy it is for someone to play to the river with a Q in their hand given the flop (straight draws with Q8 QJ KQ, plus people like to play QT Q9 more often then they should) how bad is this fold?

Dopey [img]/images/graemlins/smirk.gif[/img]

BisonBison's Hand converter didn't convert properly but I believe the action shown is correct