is there enough doubt to call here?

[mr pink]

button is fairly unknown... haven't seen him do anything to make me think he's either good or bad

Party Poker 2/4 Hold'em (8 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Preflop: Hero is MP2 with T/images/graemlins/spade.gif, A/images/graemlins/club.gif.
<font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">1 fold</font>, Button calls, <font color="#666666">1 fold</font>, BB calls.

Flop: (6.50 SB) 7/images/graemlins/club.gif, 6/images/graemlins/heart.gif, Q/images/graemlins/heart.gif <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">Button raises</font>, BB folds, Hero calls.

Turn: (5.25 BB) 6/images/graemlins/diamond.gif <font color="#0000FF">(2 players)</font>
Hero checks, Button checks.

River: (5.25 BB) Q/images/graemlins/club.gif <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets</font>, Hero calls.

[KDawgCometh]

I think so. I wouldn't be surprised if he's trying to push a failed flush draw through

[admiralfluff]

Not calling this river would be inconsistent with your flop call. If you don't have enough doubt to call the river, you should have dumped it to the flop c/r.

[imported_AlphaGun]

Button could easily have missed a flush draw the way they played this hand. So I would say yes. If they are a decent player, the cold-call preflop makes it less likely that you have them beaten. But without a read I think I would call this.

[mr pink]

i'm not a huge fan of bet/folding the flop after trying to steal, but i see what you're saying