Overture Listing 5 & 6 Showing Twice in Yahoo?

[OneThingWell]

I searched a couple of client's terms in preparation for an Overture submission, and it appears that Yahoo is showing listings 5&6 twice.

Once in the upper right hand corner, and once at the bottom of the page. Anyone tested to see if position 5 or 6 has better CTR than position 1 thru 4 in Sponsored Listings?

When did this start? Its been awhile since I've paid attention to Overture.