Kinky list styling in WP 1.3

On my 1.3 testbed I am experimenting. Now here’s the thing. If you look at my blogroll link cat – then come what may; the full link list will not adopt the link styling between links two and three. In this case that means no border between those two links. Mysterious or what ? Furthermore the markup dispensed by the php does not give any clue. Very odd ??