I have a Log-in form that passes a model to a SurfaceController for validation.

The form works correctly and looks like this:

   using (Html.BeginUmbracoForm("Login", "LoginSurface"))
    {
       @Html.EditorFor(x => Model)
       <input type="submit" />
    }

However, I have a smaller log-in form in my other pages, which looks like this:

    @using (Html.BeginUmbracoForm("Login", "LoginSurface"))
    {
        @Html.TextBoxFor(x => login.Name, new { placeholder="username" }) <br />
        @Html.TextBoxFor(x => login.Password, new { placeholder = "password" }) <br />
        <input type="submit"  value="Sign In" class="button">
    }

The design dictates that this look a little different, but I can't see that it should behave differently.

The SurfaceController that collects these requests looks like this:

    [HttpPost]
    [ActionName("Login")]
    public ActionResult LoginPost(LoginModel model)
    {
        if (Membership.ValidateUser(model.Username, model.Password))
        {
            FormsAuthentication.SetAuthCookie(model.Username, model.Remember);
            return RedirectToCurrentUmbracoPage();

        }
        else
        {
            TempData["Status"] = "Invalid username or password";
            return RedirectToCurrentUmbracoPage();
        }
    }

The problem is that when my second form is used, the LoginModel is coming back to the SurfaceController with all it's fields empty.

Any idea what is going on?