We are about to launch a new site for http://www.absolute-performance.com on Joomla 1.5.7 with the JA Trona template. The default menu css causes the fade problem in ie (apparently IE does not like pngs with fade defined in the alpha channel). I resolved the issue by changing the following section of style in ja.cssmenu.css. We have only tested with IE7.
#ja-cssmenu li ul {
border: 1px solid #202020;
/* background: url(../../images/trans-bg.png); */
background: #333333;
}
I’m open to a better solution, but this seems to work.