Yes, it looks like IE7 struggles with the CSS styles the Blinq menu uses. To fix this, follow these steps:
1. Between line 80 and 81 (in the section for li.AspNet-Menu-Leaf) of C:\Program Files\Microsoft ASP.NET\Blinq\ThemeFiles\MenuStyles.css, add this line:
width: 141px;
2. Add this section to the same file:
.AspNet-Menu-WithChildren
{
width: 160px;
}
To make sure you're not affecting any other style, it's safest to add it to the top of the file. Each time Blinq runs, it will use the new MenuStyles.css file. If you have existing Blinq-generated applications that you'd like to fix, make the same change to the MenuStyles.css file in App_Themes\Default.
Hope this helps...