Safari 3.1 renders the page correctly, 31157 does not.
The bug does not appear on 31196 (win), but on 31201 (mac).
Created attachment 19925 [details] Screenshot screenshot showing the mac behaviour
31132 (mac) renders the page fine, 31157 (mac) shows the erraneous behaviour
I re-checked 31196 (win), it also has the buggy behaviour.
Works: r31114 Fails: r31132. Probably a duplicate of bug 17966.
*** This bug has been marked as a duplicate of 17966 ***