This Div has no padding

In this page all the divs have the same padding.
However you STILL get the wierd scrollbar at the bottom!!
But if you turn off the body margin (here) ...

I can put lots of text in it like this so it overflows the edges. and it still doesnt work !!!

this DIv also has padding-left set to 10px;!! - you can see it is a little better

This DIV has horizontal padding set (padding-left) set to 40px and it looks ok !!! AAAAARGH