As this is a known issue,I already run microsoft hotfix update for this problem.Also added z-index = 1000 for DynamicMenuStyle.I have also used CSSFriendlyAdapters.
At last I hav also added <meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />
in master as ell as my Default.aspx where I want to display menu.Menu list is from Database.My menu perfectly works in FireFox and Google Chrome.But in IE8 it doesnt show sub menus.Please anyone help me solve this problem.

Can you post some of the generated html code for the menu? Maybe that'll give someone a place to start thinking.

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