diff --git a/mozilla/network/module/nsHttpUrl.cpp b/mozilla/network/module/nsHttpUrl.cpp
index f0741e6024f..510c59c4707 100644
--- a/mozilla/network/module/nsHttpUrl.cpp
+++ b/mozilla/network/module/nsHttpUrl.cpp
@@ -53,6 +53,7 @@ public:
 
     /* nsIProtocolConnection interface... */
     NS_IMETHOD InitializeURLInfo(URL_Struct_ *URL_s);
+    NS_IMETHOD GetURLInfo(URL_Struct_** aResult);
 
     /* nsIPostToServer interface... */
     NS_IMETHOD  SendFile(const char *aFile);
@@ -175,6 +176,22 @@ NS_METHOD nsHttpUrlImpl::InitializeURLInfo(URL_Struct *URL_s)
 }
 
 
+NS_METHOD nsHttpUrlImpl::GetURLInfo(URL_Struct_** aResult)
+{
+  nsresult rv;
+
+  if (nsnull == aResult) {
+    rv = NS_ERROR_NULL_POINTER;
+  } else {
+    /* XXX: Should the URL be reference counted here?? */
+    *aResult = m_URL_s;
+    rv = NS_OK;
+  }
+
+  return rv;
+}
+
+
 NS_METHOD  nsHttpUrlImpl::SendFile(const char *aFile)
 {
     nsresult result;
diff --git a/mozilla/network/module/nsINetService.h b/mozilla/network/module/nsINetService.h
index 40f81377a29..dc7669e076f 100644
--- a/mozilla/network/module/nsINetService.h
+++ b/mozilla/network/module/nsINetService.h
@@ -73,6 +73,14 @@ struct nsINetService : public nsISupports
                                   nsIStreamListener *aConsumer,
                                   nsIInputStream **aNewStream) = 0;
 
+    /**
+     * Interrupt an asynchronous URL load.<BR><BR>
+     *
+     * @param aUrl  The URL to stop loading.
+     * @return Returns NS_OK if successful, or NS_ERROR_FAILURE if an error occurred.
+     */ 
+    NS_IMETHOD InterruptStream(nsIURL* aURL) = 0;
+
     /**
      * Get the complete cookie string associated with the URL
      *
diff --git a/mozilla/network/module/nsIProtocolConnection.h b/mozilla/network/module/nsIProtocolConnection.h
index bfa47bb35a7..7c4dd72507f 100644
--- a/mozilla/network/module/nsIProtocolConnection.h
+++ b/mozilla/network/module/nsIProtocolConnection.h
@@ -1,4 +1,4 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
  *
  * The contents of this file are subject to the Netscape Public License
  * Version 1.0 (the "NPL"); you may not use this file except in
@@ -29,13 +29,15 @@ struct URL_Struct_;
 /* 121CC0F1-EA26-11d1-BEAE-00805F8A66DC */
 #define NS_IPROTOCOLCONNECTION_IID                      \
 { 0x121cc0f1, 0xea26, 0x11d1,                           \
-    { 0xbe, 0xae, 0x0, 0x80, 0x5f, 0x8a, 0x66, 0xdc } }
+  { 0xbe, 0xae, 0x0, 0x80, 0x5f, 0x8a, 0x66, 0xdc } }
 
 
 
-struct nsIProtocolConnection : public nsISupports
+class nsIProtocolConnection : public nsISupports
 {
-    NS_IMETHOD InitializeURLInfo(URL_Struct_ *URL_s) = 0;
+public:
+  NS_IMETHOD InitializeURLInfo(URL_Struct_ *URL_s) = 0;
+  NS_IMETHOD GetURLInfo(URL_Struct_ **aResult)     = 0;
 };
 
-#endif /* nsIHttpUrl_h___ */
+#endif /* nsIIProtocolConnection_h___ */
diff --git a/mozilla/network/module/nsNetService.cpp b/mozilla/network/module/nsNetService.cpp
index a282ae0ecaf..f359bc5bdec 100644
--- a/mozilla/network/module/nsNetService.cpp
+++ b/mozilla/network/module/nsNetService.cpp
@@ -310,12 +310,6 @@ nsresult nsNetlibService::OpenStream(nsIURL *aUrl,
 
     SetupURLStruct(aUrl, URL_s);
 
-    /* 
-     * Mark the URL as background loading.  This prevents many
-     * client upcall notifications...
-     */
-    URL_s->load_background = FALSE;
-
     /*
      * Attach the Data Consumer to the URL_Struct.
      *
@@ -449,12 +443,6 @@ nsresult nsNetlibService::OpenBlockingStream(nsIURL *aUrl,
         }
 #endif /* XP_WIN && !NETLIB_THREAD */
 
-        /* 
-         * Mark the URL as background loading.  This prevents many
-         * client upcall notifications...
-         */
-        URL_s->load_background = FALSE;
-
         /*
          * Attach the ConnectionInfo object to the URL_Struct.
          *
@@ -506,6 +494,38 @@ loser:
     return NS_FALSE;
 }
 
+NS_IMETHODIMP
+nsNetlibService::InterruptStream(nsIURL* aURL)
+{
+  nsIProtocolConnection *pProtocol;
+  nsresult rv = NS_OK;
+
+  if (nsnull == aURL) {
+    rv = NS_ERROR_NULL_POINTER;
+    goto done;
+  }
+
+  rv = aURL->QueryInterface(kIProtocolConnectionIID, (void**)&pProtocol);
+   if (NS_SUCCEEDED(rv)) {
+     URL_Struct* URL_s;
+     int status = -1;
+
+     pProtocol->GetURLInfo(&URL_s);
+     if (nsnull != URL_s) {
+       status = NET_InterruptStream(URL_s);
+     }
+     NS_RELEASE(pProtocol);
+
+     if (status != 0) {
+       rv = NS_ERROR_FAILURE;
+     }
+   }
+
+done:
+  return rv;
+}
+
+
 NS_IMETHODIMP
 nsNetlibService::GetCookieString(nsIURL *aURL, nsString& aCookie)
 {
diff --git a/mozilla/network/module/nsURL.cpp b/mozilla/network/module/nsURL.cpp
index 664467a6418..21e56659a4a 100644
--- a/mozilla/network/module/nsURL.cpp
+++ b/mozilla/network/module/nsURL.cpp
@@ -696,7 +696,7 @@ nsIInputStream* URLImpl::Open(PRInt32* aErrorCode)
                                     (nsISupports **)&inet);
   if (NS_OK == rv) {
     rv = inet->OpenBlockingStream(this, NULL, &in);
-    NS_RELEASE(inet);
+    nsServiceManager::ReleaseService(kNetServiceCID, inet);
   }
 
   *aErrorCode = rv;
@@ -716,7 +716,7 @@ nsresult URLImpl::Open(nsIStreamListener *aListener)
                                       (nsISupports **)&inet);
     if (NS_OK == rv) {
       rv = inet->OpenStream(this, aListener);
-      NS_RELEASE(inet);
+      nsServiceManager::ReleaseService(kNetServiceCID, inet);
     }
   }
   return rv;