AK in trouble?

[willperkins]

Both players in this hand have been playing solid poker. They havn't been involved in many hands and the hands they have shown down have been reasonable.

What would you do with a raise in front of you and someone who called your initial raise still to act behind you?

$10/$1 Poker Stars NL
Blinds 75/150
Seat 4 is the button
Total number of players : 5
Seat 1: Hero (2075)
Seat 2: linkunlovr (3470)
Seat 4: highhopes55 (2845)
Seat 6: 123Magic (1700)
Seat 9: Westchase115 (3410)
123Magic posts small blind (75)
Westchase115 posts big blind (150)
** Dealing down cards **
Dealt to Hero [ K [img]/images/graemlins/club.gif[/img], A [img]/images/graemlins/spade.gif[/img] ]
Hero raises (600) to 600
linkunlovr folds.
highhopes55 folds.
123Magic calls (525)
Westchase115 raises (1350) to 1500


Hero???