screen shot of the issue
See the two screen shots attache one from IE8 on a PC the other from Safari on a mac but basically it appears to work on everything I have tested except IE8.
Notice how on the IE screen shot it stops at "news and local events".... and there is no scroll bar on the page. Compare this to the Safari screen shot and you will see there are a lot more pages in the list and the scroll bar indicating that there is even more content that currently showing.
I have zoomed out on both of these so you could see what I ment.
Yes it was exactly the same CMS - same site in fact, does this help. o