diff --git a/mail/themes/gnomestripe/mail/mailWindow1.css b/mail/themes/gnomestripe/mail/mailWindow1.css
index 2e8fc8c729..a3046be926 100644
--- a/mail/themes/gnomestripe/mail/mailWindow1.css
+++ b/mail/themes/gnomestripe/mail/mailWindow1.css
@@ -349,7 +349,7 @@ treechildren::-moz-tree-image(subjectCol, imapdeleted) {
 /* ..... update notifications ..... */
 
 #checkForUpdates[loading="true"] {
-  list-style-image: url("chrome://global/skin/throbber/Throbber-small.gif");
+  list-style-image: url("chrome://global/skin/icons/loading_16.png");
 }
 
 #threadTree treechildren::-moz-tree-row(odd) {
diff --git a/mail/themes/gnomestripe/mail/tabmail.css b/mail/themes/gnomestripe/mail/tabmail.css
index 2c2c53773f..b6dff5baa1 100644
--- a/mail/themes/gnomestripe/mail/tabmail.css
+++ b/mail/themes/gnomestripe/mail/tabmail.css
@@ -68,8 +68,7 @@
 }
 
 .tabmail-tab[busy] > .tab-image-middle > .tab-icon > .tab-icon-image {
-  list-style-image: url("chrome://global/skin/throbber/Throbber-small.gif") !important;
-  opacity: 0.6;
+  list-style-image: url("chrome://global/skin/icons/loading_16.png") !important;
 }
 
 .tabmail-tab[selected="true"] {
@@ -507,6 +506,5 @@ stack[chromedir="rtl"] > hbox > .tabs-alltabs-box-animate {
 }
 
 .alltabs-item[busy] > .menu-iconic-left > .menu-iconic-icon {
-  list-style-image: url("chrome://global/skin/throbber/Throbber-small.gif");
-  opacity: 0.6;
+  list-style-image: url("chrome://global/skin/icons/loading_16.png");
 }
diff --git a/mail/themes/qute/mail/mailWindow1.css b/mail/themes/qute/mail/mailWindow1.css
index 2e8fc8c729..a3046be926 100644
--- a/mail/themes/qute/mail/mailWindow1.css
+++ b/mail/themes/qute/mail/mailWindow1.css
@@ -349,7 +349,7 @@ treechildren::-moz-tree-image(subjectCol, imapdeleted) {
 /* ..... update notifications ..... */
 
 #checkForUpdates[loading="true"] {
-  list-style-image: url("chrome://global/skin/throbber/Throbber-small.gif");
+  list-style-image: url("chrome://global/skin/icons/loading_16.png");
 }
 
 #threadTree treechildren::-moz-tree-row(odd) {
diff --git a/mail/themes/qute/mail/messenger.css b/mail/themes/qute/mail/messenger.css
index 93de3dc9d9..b995362ecb 100644
--- a/mail/themes/qute/mail/messenger.css
+++ b/mail/themes/qute/mail/messenger.css
@@ -39,12 +39,11 @@ toolbar[printpreview="true"] {
   padding: 0px !important;
   min-width: 0;
   background-color: transparent;
-  list-style-image: url("chrome://global/skin/throbber/Throbber-small.png");
+  list-style-image: url("chrome://global/skin/icons/notloading_16.png");
 }
 
 #navigator-throbber[busy="true"] {
-  list-style-image: url("chrome://global/skin/throbber/Throbber-small.gif");
-  opacity: 0.5;
+  list-style-image: url("chrome://global/skin/icons/loading_16.png");
 }
 
 /* the default settings for the throbber hbox is too tall for vista menus */
@@ -57,13 +56,12 @@ toolbar[printpreview="true"] {
 
 toolbar[iconsize="small"] #navigator-throbber,
 toolbar[mode="text"] #navigator-throbber {
-  list-style-image: url("chrome://global/skin/throbber/Throbber-small.png");
+  list-style-image: url("chrome://global/skin/icons/notloading_16.png");
 }
 
 toolbar[iconsize="small"] #navigator-throbber[busy="true"],
 toolbar[mode="text"] #navigator-throbber[busy="true"] {
-list-style-image: url("chrome://global/skin/throbber/Throbber-small.gif");
-  opacity: 0.5;
+  list-style-image: url("chrome://global/skin/icons/loading_16.png");
 }  
 /* ::::: online/offline icons ::::: */
 
diff --git a/mail/themes/qute/mail/tabmail.css b/mail/themes/qute/mail/tabmail.css
index 2c2c53773f..b6dff5baa1 100644
--- a/mail/themes/qute/mail/tabmail.css
+++ b/mail/themes/qute/mail/tabmail.css
@@ -68,8 +68,7 @@
 }
 
 .tabmail-tab[busy] > .tab-image-middle > .tab-icon > .tab-icon-image {
-  list-style-image: url("chrome://global/skin/throbber/Throbber-small.gif") !important;
-  opacity: 0.6;
+  list-style-image: url("chrome://global/skin/icons/loading_16.png") !important;
 }
 
 .tabmail-tab[selected="true"] {
@@ -507,6 +506,5 @@ stack[chromedir="rtl"] > hbox > .tabs-alltabs-box-animate {
 }
 
 .alltabs-item[busy] > .menu-iconic-left > .menu-iconic-icon {
-  list-style-image: url("chrome://global/skin/throbber/Throbber-small.gif");
-  opacity: 0.6;
+  list-style-image: url("chrome://global/skin/icons/loading_16.png");
 }