ASP .NET - asp:Menu based on sitemap does not work in IE7?

Question

I have a asp:Menu bound to a Sitemap on my sites master page:

<asp:Menu ID="Menu1" runat="server" 
     DataSourceID="SiteMapDataSource2" 
     Orientation="Horizontal" 
     StaticDisplayLevels="2" 
     CssSelectorClass="PrettyMenu">
</asp:Menu>

The menu works really well on my development box with Firefox 3.5. When I try to run the site within IE7 the menu does not respond at all.

Is there something related to the menu code that would cause this?

UPDATE2:

The issue appears to be related to the CSS Friendly Controls Adaptor. Firefox is responsive but IE7 only shows the top tier of the menu and doesn't respond at all.

Answer 1

I had a similar problem with IIS 6.0 and IE8. The following Microsoft KB article talks about it. Don't know it applies in your case though:

http://support.microsoft.com/?scid=kb%3Ben-us%3B969612&x=5&y=10

Answer 2

In case anyone else encounters something similar:

I had to remove the CSS Friendly (browser) files from the project and all the menu issues went away.