FriendFeed backdating feeds?

I have just created a FriendFeed account for the following:

• Twitter
• Facebook
• Delicious
• Wordpress RSS feed 1
• Wordpress RSS feed 2

These are all personal things that I want stored in a single place.

FF has only imported 60 items.

Is this normal and is there a way to make it backdate all the way to the beginning of my Facebook / Twitter account etc? (There is a large amount of data altogether.)