aspMenu blinking-flickering problem on IE8

aspMenu blinking-flickering problem on IE8.
This doesnt occurs in firefox.
css solution (below this post)doesnt help.
also dont want to use "compatible mode".because pages become verybad on compatible mode.

isnt there an absolute solution to fix this problem ?
    <style type="text/css">
        div.menu ul li ul
        {
            display: none;
        }
        #menu ul li
        {
            position: relative;
            float: left;
            list-style: none;
  &nb ...