diff --git a/content/base/src/nsScriptLoader.cpp b/content/base/src/nsScriptLoader.cpp
index 4eeaf20f101..2bead8b3139 100644
--- a/content/base/src/nsScriptLoader.cpp
+++ b/content/base/src/nsScriptLoader.cpp
@@ -341,7 +341,12 @@ nsScriptLoader::ProcessScriptElement(nsIDOMHTMLScriptElement *aElement,
     if (NS_FAILED(rv)) {
       return FireErrorNotification(rv, aElement, aObserver);
     }
-    rv = securityManager->CheckLoadURI(baseURI, scriptURI, 
+    nsCOMPtr<nsIURI> docURI;
+    mDocument->GetDocumentURL(getter_AddRefs(docURI));
+    if (!docURI) {
+      return FireErrorNotification(NS_ERROR_UNEXPECTED, aElement, aObserver);
+    }
+    rv = securityManager->CheckLoadURI(docURI, scriptURI, 
                                        nsIScriptSecurityManager::ALLOW_CHROME);
     if (NS_FAILED(rv)) {
       return FireErrorNotification(rv, aElement, aObserver);
diff --git a/content/html/content/src/nsHTMLFormElement.cpp b/content/html/content/src/nsHTMLFormElement.cpp
index aefedbabf2a..c0cc17ea0ee 100644
--- a/content/html/content/src/nsHTMLFormElement.cpp
+++ b/content/html/content/src/nsHTMLFormElement.cpp
@@ -1054,10 +1054,10 @@ nsHTMLFormElement::GetActionURL(nsIURI** aActionURL)
   }
 
   // Get base URL
-  nsCOMPtr<nsIURI> docURL;
-  GetBaseURL(*getter_AddRefs(docURL));
-  NS_ASSERTION(docURL, "No Base URL found in Form Submit!\n");
-  if (!docURL) {
+  nsCOMPtr<nsIURI> baseURL;
+  GetBaseURL(*getter_AddRefs(baseURL));
+  NS_ASSERTION(baseURL, "No Base URL found in Form Submit!\n");
+  if (!baseURL) {
     return NS_OK; // No base URL -> exit early, see Bug 30721
   }
 
@@ -1077,10 +1077,10 @@ nsHTMLFormElement::GetActionURL(nsIURI** aActionURL)
       return NS_OK;
     }
 
-    rv = docURL->Clone(getter_AddRefs(actionURL));
+    rv = baseURL->Clone(getter_AddRefs(actionURL));
     NS_ENSURE_SUCCESS(rv, rv);
   } else {
-    rv = NS_NewURI(getter_AddRefs(actionURL), action, nsnull, docURL);
+    rv = NS_NewURI(getter_AddRefs(actionURL), action, nsnull, baseURL);
     NS_ENSURE_SUCCESS(rv, rv);
   }
 
@@ -1095,6 +1095,10 @@ nsHTMLFormElement::GetActionURL(nsIURI** aActionURL)
     do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv);
   NS_ENSURE_SUCCESS(rv, rv);
 
+  nsCOMPtr<nsIURI> docURL;
+  mDocument->GetDocumentURL(getter_AddRefs(docURL));
+  NS_ENSURE_TRUE(docURL, NS_ERROR_UNEXPECTED);
+  
   rv = securityManager->CheckLoadURI(docURL, actionURL,
                                      nsIScriptSecurityManager::STANDARD);
   NS_ENSURE_SUCCESS(rv, rv);
diff --git a/content/html/style/src/nsCSSLoader.cpp b/content/html/style/src/nsCSSLoader.cpp
index f6cc45eb05b..679b3b6d18a 100644
--- a/content/html/style/src/nsCSSLoader.cpp
+++ b/content/html/style/src/nsCSSLoader.cpp
@@ -1707,11 +1707,10 @@ CSSLoaderImpl::LoadStyleLink(nsIContent* aElement,
   nsCOMPtr<nsIScriptSecurityManager> secMan = 
            do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv);
   if (NS_FAILED(rv)) return rv;
-  nsIURI* docURI;
-  rv = mDocument->GetBaseURL(docURI);
+  nsCOMPtr<nsIURI> docURI;
+  rv = mDocument->GetDocumentURL(getter_AddRefs(docURI));
   if (NS_FAILED(rv) || !docURI) return NS_ERROR_FAILURE;
   rv = secMan->CheckLoadURI(docURI, aURL, nsIScriptSecurityManager::ALLOW_CHROME);
-  NS_IF_RELEASE(docURI);
   if (NS_FAILED(rv)) return rv;
 
   // XXX need to add code to cancel any pending sheets for element
diff --git a/layout/style/nsCSSLoader.cpp b/layout/style/nsCSSLoader.cpp
index f6cc45eb05b..679b3b6d18a 100644
--- a/layout/style/nsCSSLoader.cpp
+++ b/layout/style/nsCSSLoader.cpp
@@ -1707,11 +1707,10 @@ CSSLoaderImpl::LoadStyleLink(nsIContent* aElement,
   nsCOMPtr<nsIScriptSecurityManager> secMan = 
            do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv);
   if (NS_FAILED(rv)) return rv;
-  nsIURI* docURI;
-  rv = mDocument->GetBaseURL(docURI);
+  nsCOMPtr<nsIURI> docURI;
+  rv = mDocument->GetDocumentURL(getter_AddRefs(docURI));
   if (NS_FAILED(rv) || !docURI) return NS_ERROR_FAILURE;
   rv = secMan->CheckLoadURI(docURI, aURL, nsIScriptSecurityManager::ALLOW_CHROME);
-  NS_IF_RELEASE(docURI);
   if (NS_FAILED(rv)) return rv;
 
   // XXX need to add code to cancel any pending sheets for element