Updates the membership partial view templates to redirect to current page by default but allows this to be overridden. Creates a new RedirectToCurrentUmbracoUrl method which is slightly diff from RedirectToCurrentUmbracoPage since it doesn't care about the actual page item rendering, just the currently rendered URL which is useful if coming from a rewritten URL (which is what happens with public access rewrites)

src/Umbraco.Web/Controllers/UmbLoginController.cs

@@ -4,6 +4,7 @@ using System.Web.Security;
 using umbraco.cms.businesslogic.member;
 using Umbraco.Web.Models;
 using Umbraco.Web.Mvc;
+using Umbraco.Core;
 
 namespace Umbraco.Web.Controllers
 {
@@ -24,7 +25,16 @@ namespace Umbraco.Web.Controllers
                 return CurrentUmbracoPage();
             }
 
-            return Redirect("/");            
+            //if there is a specified path to redirect to then use it
+            if (model.RedirectUrl.IsNullOrWhiteSpace() == false)
+            {
+                return Redirect(model.RedirectUrl);
+            }
+
+            //redirect to current page by default
+            TempData.Add("LoginSuccess", true);
+            //return RedirectToCurrentUmbracoPage();
+            return RedirectToCurrentUmbracoUrl();
         }
     }
 }