yeah, thought it was wierd. Here are a couple related lines in my styled CSS, not sure what would cause it:

.IntraMenu ul.AspNet-Menu ul
{
    left: 146px;
    top: 0px;
    width: 146px;
}

.IntraMenu ul.AspNet-Menu li
{
    background-color: #A18E84;
    border-bottom-width: 1px;
    border-bottom-style: solid;
    border-bottom-color: #CBC1BC;
    margin: 0px;
    padding: 0px;
    clear: both;
}