Until last week's site redesign, WSI's Intellicast was a mess. I'd had it out with them several times, and it was not a Safari issue, it was an issue of coding for IE6.
Now it seems to work, especially after one last tweak late in the week.
The menus are a bit twitchy as you need to move across vertically thin secondaries, but given the ads they need to put up, it's better than before. You don't have to scroll to see actual content.
For more on the mess MS has made of...