Goals Overview takes time to be updated

Hi,

When I convert a goal, I see it immediately in the “Visitor Log”, but it takes a while to show up in the “Goals > Overview” graph. It looks like the data for the goal graph is periodically recalculated. How can I control the time it takes to recalculate the data for the Goals Overview graph? Is there a setting in the config file for that? I’d like to see the goal graph updated as soon as possible.

Regards,
Marcos