@if (ViewData.ModelState.Any(x => x.Value.Errors.Any())) 
{ 
   <div class="alert alert-error"> 
      <a class="close" data-dismiss="alert">�</a> 
      @Html.ValidationSummary(true)
   </div>
}

@if (ViewData.ModelState.Any(x => x.Value.Errors.Any())) 
{ 
   <div class="alert alert-error"> 
      <a class="close" data-dismiss="alert">&times;/a> 
      @Html.ValidationSummary(true)
   </div>
}

Use `&times;` for close button
Use `&times;` for close button

I'm not sure about the encoding that was used; the X character renders strange. At http://twitter.github.com/bootstrap/components.html#alerts `&times;` is used for the close character, maybe we should too?