Superfish bug: ie6 with jquery-1.4.4

I encountered a bug today where 3rd-level fly-out navs weren't displaying in internet explorer 6 with superfish 1.4.8. Eventually narrowed down the cause to the jquery library. Replaced jquery-1.4.4 with jquery-1.4.2 and the problem was resolved. Hopefully reporting this will help some other people and prevent some hair-tearing.