Is this a leak?

[Roland32]

i find myself doing this less and less often. It seems like it is a play I should be able to use. THoughts?

PokerStars No-Limit Hold'em Tourney, Big Blind is t150 (7 handed) converter

MP1 (t1185)
MP2 (t1610)
CO (t1175)
Hero (t1740)
SB (t1650)
BB (t4025)
UTG (t2115)

Preflop: Hero is Button with 4[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">MP2 raises to t600</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to t1740</font>, <font color="#666666">2 folds</font>, MP2 calls t1010 (All-In).

Flop: (t3575) 4[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

Turn: (t3575) 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

River: (t3575) 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

Final Pot: t3575

[Shilly]

With villain's stack size, I wouldn't make this move. He's bet more than 1/3 of his stack, and I don't think he's folding any hand now. You're almost never ahead here, sometimes a coinflip, and sometimes crushed.