diff --git a/mailnews/base/resources/content/mail3PaneWindowVertLayout.xul b/mailnews/base/resources/content/mail3PaneWindowVertLayout.xul
index 5d37cb6f88a..e57c5639a25 100644
--- a/mailnews/base/resources/content/mail3PaneWindowVertLayout.xul
+++ b/mailnews/base/resources/content/mail3PaneWindowVertLayout.xul
@@ -183,7 +183,8 @@ Rights Reserved.
         <hbox id="msgHeaderView"/>
 
         <!-- message view -->
-        <browser id="messagepane" context="messagePaneContext" style="height: 0px" flex="1" name="messagepane" type="content-primary" src="about:blank" onclick="contentAreaClick(event);" ondraggesture="nsDragAndDrop.startDrag(event, contentAreaDNDObserver);"/>
+        <browser id="messagepane" context="messagePaneContext" style="height: 0px" flex="1" name="messagepane" 
+          disableHistory="true" type="content-primary" src="about:blank" onclick="contentAreaClick(event);" ondraggesture="nsDragAndDrop.startDrag(event, contentAreaDNDObserver);"/>
       </vbox>  
 
     </vbox>
diff --git a/mailnews/base/resources/content/messageWindow.xul b/mailnews/base/resources/content/messageWindow.xul
index 26ea76ac31d..c34b62ac5b7 100644
--- a/mailnews/base/resources/content/messageWindow.xul
+++ b/mailnews/base/resources/content/messageWindow.xul
@@ -131,7 +131,8 @@ Rights Reserved.
     <hbox id="msgHeaderView"/>
 
     <!-- message view -->
-    <browser id="messagepane" context="messagePaneContext" style="height: 0px" flex="1" name="messagepane" type="content-primary" src="about:blank" onclick="contentAreaClick(event);" ondraggesture="nsDragAndDrop.startDrag(event, contentAreaDNDObserver);"/>
+    <browser id="messagepane" context="messagePaneContext" style="height: 0px" flex="1" name="messagepane" 
+      disableHistory="true" type="content-primary" src="about:blank" onclick="contentAreaClick(event);" ondraggesture="nsDragAndDrop.startDrag(event, contentAreaDNDObserver);"/>
   </vbox>  
 
 
diff --git a/mailnews/base/resources/content/messenger.xul b/mailnews/base/resources/content/messenger.xul
index 0eeb7f26a45..2aea2aa5a14 100644
--- a/mailnews/base/resources/content/messenger.xul
+++ b/mailnews/base/resources/content/messenger.xul
@@ -177,7 +177,8 @@ Rights Reserved.
       <vbox id="messagepanebox" flex="3" persist="collapsed height" class="window-focusborder" focusring="false" onclick="contentAreaClick(event);" ondraggesture="nsDragAndDrop.startDrag(event, contentAreaDNDObserver);">
         <hbox id="msgHeaderView"/>
     
-        <browser id="messagepane" context="messagePaneContext" style="height: 0px" flex="1" name="messagepane" type="content-primary" src="about:blank"/>
+        <browser id="messagepane" context="messagePaneContext" style="height: 0px" flex="1" name="messagepane" 
+          disableHistory="true" type="content-primary" src="about:blank"/>
       </vbox>  
       </vbox>