控制器方法调用两次？

Question

基础控制器：

public class AnaController : Controller
{
    protected override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        ViewBag.AktifKullanici = kullaniciServis.AktifKullanici(KullaniciEposta);
        base.OnActionExecuting(filterContext);
    }
}

从上面的控制器继承的控制器：

public class AnasayfaController : AnaController
{
    private HaberSitesiDbContext db;
    private HaberServis haberServis;
    private KullaniciServis kullaniciServis;

    public AnasayfaController()
    {
        this.db = new HaberSitesiDbContext();
        this.haberServis = new HaberServis(db);
        this.kullaniciServis = new KullaniciServis(db);
    }

    // !!! following methods called twice !!!

    public ActionResult Index()
    {
        return View();
    }

    public ActionResult _SolManset()
    {
        // id si 2 olanlar sol manset haberleri
        var haberler = haberServis.PozisyonHaberler(2, 3)
            .ToList();

        return PartialView(haberler);
    }

    public ActionResult _Slider()
    {
        // id si 1 olanlar slider haberleri
        var haberler = haberServis.PozisyonHaberler(1, 19)
            .ToList();

        return PartialView(haberler);
    }

    public ActionResult _Yazarlar()
    {
        var yazarlar = haberServis.KoseYazilari(5)
            .ToList();

        return PartialView(yazarlar);
    }

    protected override void Dispose(bool disposing)
    {
        db.Dispose();
        base.Dispose(disposing);
    }
}

布局：

...
<article id="body">
    @RenderBody()
</article>
...

指数：

<aside class="aside_small float_left">
   @Html.Action("_SolManset", "Anasayfa")
</aside>
<section class="section_middle">
   @Html.Action("_Slider", "Anasayfa")
</section>
<aside class="aside_small float_right">
   @Html.Action("_Yazarlar", "Anasayfa")
</aside>

我找不到任何解决方案。有什么建议吗？没有额外的代码，没有js代码。我怎样才能找到第二次来电的来源？