The Facebook data you see in Geckoboard can be up to 48 hours old. As such, you may find your most common metrics, such as Page Likes, refresh once every 48 hours. This limitation comes from the Facebook API itself.
The following metrics are unique in that they get updated every 15 minutes in the Facebook API:
Page Storytellers
Unique Post Stories
Unique Post Impressions
Unique Paid Post Impressions
Unique Post Fan Impressions
Unique Paid Post Fan Impressions
Unique Organic Post Impressions
Unique Viral Post Impressions
Unique Viral Post Story Impressions
Unique Post Consumptions
Post Negative Feedback
Post Stories
Post Impressions
Paid Post Impressions
Post Fan Impressions
Paid Post Fan Impressions
Organic Post Impressions
Viral Post Impressions
Viral Post Story Impressions
Post Consumptions
Engaged Users
Unique Post Negative Feedback