Should I have seen this coming? Did I over play my TP2K? Or did he just make a very good slowplay and the board killed me?

FullTiltPoker Game #2509752313: $26,000 Guarantee (18631899), Table 1 - 15/30 - No Limit Hold'em - 22:18:08 ET - 2007/05/25
Seat 1: harbcon (2,775)
Seat 2: Westgate Crew (1,490)
Seat 3: carolina (1,745)
Seat 4: Tclark0828 (1,470)
Seat 5: SebQtaneus (3,015)
Seat 6: AbrahamYo (1,345)
Seat 7: DeepUpEnya (1,540)
Seat 8: dragon1114 (2,100)
Seat 9: PHDofPoker03 (1,235)
PHDofPoker03 posts the small blind of 15
harbcon posts the big blind of 30
The button is in seat #8
*** HOLE CARDS ***
Dealt to SebQtaneus
Westgate Crew calls 30
carolina calls 30
Tclark0828 folds
SebQtaneus raises to 150
AbrahamYo folds
DeepUpEnya calls 150
dragon1114 folds
PHDofPoker03 folds
harbcon folds
Westgate Crew calls 120
carolina calls 120
*** FLOP ***
Westgate Crew checks
carolina checks
SebQtaneus bets 480
DeepUpEnya folds
Westgate Crew calls 480
carolina folds
*** TURN ***
Westgate Crew checks
SebQtaneus bets 900
Westgate Crew calls 860, and is all in
SebQtaneus shows
Westgate Crew shows
Uncalled bet of 40 returned to SebQtaneus
*** RIVER ***
SebQtaneus shows a pair of Aces
Westgate Crew shows two pair, Aces and Kings
Westgate Crew wins the pot (3,325) with two pair, Aces and Kings
*** SUMMARY ***
Total pot 3,325 | Rake 0
Board:
Seat 1: harbcon (big blind) folded before the Flop
Seat 2: Westgate Crew showed and won (3,325) with two pair, Aces and Kings
Seat 3: carolina folded on the Flop
Seat 4: Tclark0828 didn't bet (folded)
Seat 5: SebQtaneus showed and lost with a pair of Aces
Seat 6: AbrahamYo didn't bet (folded)
Seat 7: DeepUpEnya folded on the Flop
Seat 8: dragon1114 (button) didn't bet (folded)
Seat 9: PHDofPoker03 (small blind) folded before the Flop

I play it the same way. I want to play for his stack early in a tourney when I won't be in bad shape if I lose.

Looks fine to me.