This text should be wrapping around the image to the left, with no whitespace above it. If it isn't in IE, it's because of the following code in ui.accordion.js:

// IE7-/Win - Extra vertical space in lists fixed
if ($.browser.msie) {
	this.element.find('a').css('zoom', '1');
}

This text should has been made to wrap around the image to the left, with no whitespace above it, by resetting the zoom css on the A element that wraps the img.

$('#accordion a:has(img):last').css('zoom', '');