diff --git a/mozilla/mailnews/base/resources/content/mail3PaneWindowVertLayout.xul b/mozilla/mailnews/base/resources/content/mail3PaneWindowVertLayout.xul
index c749f135f71..f53ec1d314e 100644
--- a/mozilla/mailnews/base/resources/content/mail3PaneWindowVertLayout.xul
+++ b/mozilla/mailnews/base/resources/content/mail3PaneWindowVertLayout.xul
@@ -63,8 +63,7 @@
         titlemenuseparator="&titleSeparator.label;"
         onload="OnLoadMessenger()"
         onunload="OnUnloadMessenger()"
-        width="750"
-        height="500"
+        style="width: 60em; height: 40em;"
         screenX="10" screenY="10"
         persist="width height screenX screenY sizemode"
         windowtype="mail:3pane">
@@ -159,11 +158,12 @@
   </toolbox>
   <!-- The main mail three pane frame -->
 
-  <hbox style="height:100px" flex="1">
+  <hbox flex="1">
     <vbox flex="1">
       <hbox id="mail3PaneVertLayoutBox" persist="collapsed height" flex="1">
-        <vbox id="folderPaneBox" flex="1" autostretch="always" persist="width">
-          <tree id="folderTree" flex="1" style="min-width: 100px;" context="folderPaneContext" persist="collapsed width height"/>
+        <vbox id="folderPaneBox" persist="width">
+          <tree id="folderTree" style="width: 15em; min-width: 7em;"
+                context="folderPaneContext" persist="collapsed width height"/>
         </vbox>
 
         <splitter id="gray_vertical_splitter" collapse="before" persist="state">
diff --git a/mozilla/mailnews/base/resources/content/messenger.xul b/mozilla/mailnews/base/resources/content/messenger.xul
index 83e54cca139..5015f8d42cb 100644
--- a/mozilla/mailnews/base/resources/content/messenger.xul
+++ b/mozilla/mailnews/base/resources/content/messenger.xul
@@ -63,8 +63,7 @@
         titlemenuseparator="&titleSeparator.label;"
         onload="OnLoadMessenger()"
         onunload="OnUnloadMessenger()"
-        width="750"
-        height="500"
+        style="width: 60em; height: 40em;"
         screenX="10" screenY="10"
         persist="width height screenX screenY sizemode"
         windowtype="mail:3pane">
@@ -160,9 +159,10 @@
     <menubar id="mailMenubar"/>
   </toolbox>
 
-  <hbox style="height:100px" flex="1">
-    <vbox id="folderPaneBox" flex="1" autostretch="always" persist="width">
-      <tree id="folderTree" flex="1" style="min-width: 100px;" context="folderPaneContext" persist="collapsed width height"/>
+  <hbox flex="1">
+    <vbox id="folderPaneBox" persist="width">
+      <tree id="folderTree" style="width: 15em; min-width: 7em;"
+            context="folderPaneContext" persist="collapsed width height"/>
     </vbox>
       
     <splitter id="gray_vertical_splitter" collapse="before" persist="state">
diff --git a/mozilla/profile/defaults/localstore.rdf b/mozilla/profile/defaults/localstore.rdf
index 1cb8c810119..5c1d201dcc9 100644
--- a/mozilla/profile/defaults/localstore.rdf
+++ b/mozilla/profile/defaults/localstore.rdf
@@ -31,15 +31,8 @@
     <NC:persist resource="chrome://messenger/content/messenger.xul#totalCol"/>
     <NC:persist resource="chrome://messenger/content/messenger.xul#OrderReceivedColumn"/>
     <NC:persist resource="chrome://messenger/content/messenger.xul#flaggedCol"/>
-    <NC:persist resource="chrome://messenger/content/messenger.xul#messengerWindow"/>
     <NC:persist resource="chrome://messenger/content/messenger.xul#threadOutliner"/>
   </RDF:Description>
-  <RDF:Description about="chrome://messenger/content/messenger.xul#messengerWindow">
-    <screenX>4</screenX>
-    <screenY>4</screenY>
-    <width>800</width>
-    <height>565</height>
-  </RDF:Description>
   <RDF:Description about="chrome://messenger/content/messenger.xul#threadOutliner" height="94" />
   <RDF:Description about="chrome://messenger/content/mail3PaneWindowVertLayout.xul">
     <NC:persist resource="chrome://messenger/content/mail3PaneWindowVertLayout.xul#threadOutliner"/>