Sidebar float problem in IE6

I’m rebuilding a site into WordPress (https://thealpacaplace.no-ip.org), and I’ve just found that the sidebar is no longer appearing at the top of the page, rather down the page after the content (but still to the left) in Internet Explorer 6.

I realize there are problems with the use of floats/margins in IE6, but I haven’t yet been able to track down the exact cause of this one (I’ve found several forum posts/articles via Google, but as yet no joy).

Is someone able to give me a hand?

Sidebar CSS:

#sidebar {
	width: 181px;
	float: right;
	position: relative;
	}