My initial thought was that Jimbei wanted to apologize about Arlong...since Arlong kinda defected from Jimbei's crew to do horrible things, but now wasn't the time to talk about that.

Its amusing how so many people with conflicting goals are on the same ship right now. They either want Whitebeard to lose or want him to win, but its ok as long as they want some sort of involvement in the war.