wrong parent/child css

Hi,

I'm trying out the theme, and I came out with a little bug.
There's some css wrong with lists whenever there's any parent/children. The arrows and bullets are messed up, and there's some margin missing.

This is the original code, I just changed:

.item-list ul li {
margin:0 0 0.25em 1.25em;

in order to fix the margins.

Oddly enough, IE8 seems to display it a bit better, but not much.

I attach 2 screenshots. One of them is IE8, the other one is firefox3.6 (chrome and opera display the same).