I folded a boat on the river here...

[blackaces13]

All involved in this hand were loose/passive.

Party Poker 0.5/1 Hold'em (10 handed) converter

Preflop: Hero is MP2 with A[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/heart.gif[/img].
<font color="#666666">2 folds</font>, UTG+2 calls, MP1 calls, <font color="#CC3333">Hero raises</font>, MP3 calls, <font color="#666666">1 fold</font>, Button calls, SB calls, BB calls, UTG+2 calls, MP1 calls.

Flop: (14 SB) 5[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(7 players)</font>
SB checks, BB checks, UTG+2 checks, MP1 checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">MP3 raises</font>, Button calls, SB calls, BB folds, UTG+2 calls, MP1 calls, Hero calls.

Turn: (13 BB) K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(6 players)</font>
SB checks, UTG+2 checks, MP1 checks, Hero checks, MP3 checks, Button checks.

River: (13 BB) J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(6 players)</font>
SB checks, UTG+2 checks, MP1 checks, Hero checks, <font color="#CC3333">MP3 bets</font>, <font color="#CC3333">Button raises</font>, SB folds, UTG+2 folds, MP1 folds, Hero folds, MP3 folds.

Final Pot: 16 BB

Should I lead because of the absence of a turn bet? Is this at minimum a call with my J's full? I hated this hand.