10$ mtt AK in first hands of tourney, overplayed?

[rapsu]

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

CO (t1500)
Button (t1440)
SB (t1740)
BB (t1500)
UTG (t1500)
UTG+1 (t1500)
MP1 (t1500)
MP2 (t1320)
Hero (t1500)

Preflop: Hero is MP3 with A[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/spade.gif[/img].
<font color="#666666">4 folds</font>, <font color="#CC3333">Hero raises to t80</font>, <font color="#666666">3 folds</font>, BB calls t60.

Flop: (t170) 6[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets t120</font>, <font color="#CC3333">BB raises to t240</font>, Hero calls t120.

Turn: (t650) 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets t540</font>, <font color="#CC3333">Hero raises to t1180</font>, BB calls t640 (All-In).

River: (t3010) T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players, 1 all-in)</font>

Final Pot: t3010

The flop check miniraise worried me because I have seen many times this same situation where guy is holding very big hand. On turn I didn't have choise but to fold or push all my chips in. Because it was very early in the tournament I thougt he could have done same thing with any junk, probably with any ace so I shove all my chips in. What do you think of play and what do you think of weak players check miniraises?

[JustBlazed]

Just curious what the other guy had....?