sortable IE 7 bug when scroll bar

sortable IE 7 bug when scroll bar


I'm having a problem using jquery ui 1.5.2 (jquery 1.2.6) for
sortables. In IE7, when a <ul> becomes too big within a <div> and
scrolling is availble, I am unable to sort the list. When I try to
sort it, I don't get a js error, but instead of the <li> moving, the
whole page and all the items are just flickering. If I scroll all the
way to the bottom of the <div> the sort will work.
Anyone have seen this before or have any idea what the deal might be?
It works fine in FF and other browsers.
Cheers!