The following setting no longer has any value, as Google has changed its PageRank system:
Nofollow outbound links on the frontpage
If you want to keep the link-juice on your front page to yourself, enable this, and you will only pass link-juice from your post pages.
According to Google, all outbound links now leak link-juice. Doesn't matter if you nofollow them or not.
Joost, would you like to comment? Or do you ever visit this forum anymore?