Is this a bad river fold?

[FlyWf]

Well, from the responses to my stat post I've been trying to loosen up and stop folding winners, especially on the river. I just couldn't bring myself to call this one. No reads.
Party Poker 0.5/1 Hold'em (8 handed) converter

Preflop: Hero is UTG with J[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/club.gif[/img].
<font color="#CC3333">Hero raises</font>, <font color="#666666">4 folds</font>, Button calls, SB calls, <font color="#666666">1 fold</font>.

Flop: (7 SB) 4[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, Button calls, SB calls.

Turn: (5 BB) T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, Button calls, SB calls.

River: (8 BB) Q[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, Hero checks, <font color="#CC3333">Button bets</font>, SB calls, Hero folds.

Final Pot: 10 BB