diff --git a/mozilla/editor/ui/composer.js b/mozilla/editor/ui/composer.js
index e8e9e46120b..30104f6fae4 100644
--- a/mozilla/editor/ui/composer.js
+++ b/mozilla/editor/ui/composer.js
@@ -170,3 +170,5 @@ pref("editor.custom_color_9", "0,0,FF");
 pref("editor.last_color_picked", "0,0,0");
 pref("editor.last_background_color_picked", "255,255,255");
 pref("editor.new_cell_has_space", true);
+
+pref("editor.throbber.url","http://www.mozilla.org");
diff --git a/mozilla/mailnews/mailnews.js b/mozilla/mailnews/mailnews.js
index 63f84b211f0..2b6675a37d3 100644
--- a/mozilla/mailnews/mailnews.js
+++ b/mozilla/mailnews/mailnews.js
@@ -394,3 +394,7 @@ pref("mail.send_struct",true);     // dito
 pref("mail.forward_message_mode", 0); // 0=default as attachment 2=forward as inline with attachments, (obsolete)1=forward as quoted
 
 pref("mailnews.max_header_display_length",3); // number of addresses to show
+
+pref("messenger.throbber.url","http://www.mozilla.org");
+pref("compose.throbber.url","http://www.mozilla.org");
+pref("addressbook.throbber.url","http://www.mozilla.org");
diff --git a/mozilla/modules/libpref/src/init/all.js b/mozilla/modules/libpref/src/init/all.js
index f98350f5cbd..b4b5ba156ae 100644
--- a/mozilla/modules/libpref/src/init/all.js
+++ b/mozilla/modules/libpref/src/init/all.js
@@ -507,3 +507,5 @@ pref("custtoolbar.Composer.Formatting_Toolbar.open", true);
 pref("sidebar.customize.all_panels.url", "http://sidebar-rdf.netscape.com/%LOCALE%/sidebar-rdf/%SIDEBAR_VERSION%/all-panels.rdf");
 
 pref("prefs.converted-to-utf8",false);
+
+pref("browser.throbber.url","http://www.mozilla.org");
diff --git a/mozilla/modules/libpref/src/init/editor.js b/mozilla/modules/libpref/src/init/editor.js
index e8e9e46120b..30104f6fae4 100644
--- a/mozilla/modules/libpref/src/init/editor.js
+++ b/mozilla/modules/libpref/src/init/editor.js
@@ -170,3 +170,5 @@ pref("editor.custom_color_9", "0,0,FF");
 pref("editor.last_color_picked", "0,0,0");
 pref("editor.last_background_color_picked", "255,255,255");
 pref("editor.new_cell_has_space", true);
+
+pref("editor.throbber.url","http://www.mozilla.org");
diff --git a/mozilla/modules/libpref/src/init/mailnews.js b/mozilla/modules/libpref/src/init/mailnews.js
index 63f84b211f0..2b6675a37d3 100644
--- a/mozilla/modules/libpref/src/init/mailnews.js
+++ b/mozilla/modules/libpref/src/init/mailnews.js
@@ -394,3 +394,7 @@ pref("mail.send_struct",true);     // dito
 pref("mail.forward_message_mode", 0); // 0=default as attachment 2=forward as inline with attachments, (obsolete)1=forward as quoted
 
 pref("mailnews.max_header_display_length",3); // number of addresses to show
+
+pref("messenger.throbber.url","http://www.mozilla.org");
+pref("compose.throbber.url","http://www.mozilla.org");
+pref("addressbook.throbber.url","http://www.mozilla.org");