4 files changed, 26 insertions, 13 deletions
diff --git a/toolkit/content/about.js b/toolkit/content/about.js
index ae467d07a..c27916c10 100644
--- a/toolkit/content/about.js
+++ b/toolkit/content/about.js
@@ -5,14 +5,24 @@
 // get release notes and vendor URL from prefs
 var formatter = Components.classes["@mozilla.org/toolkit/URLFormatterService;1"]
                           .getService(Components.interfaces.nsIURLFormatter);
-var releaseNotesURL = formatter.formatURLPref("app.releaseNotesURL");
+var releaseNotesURL;
+try {
+  releaseNotesURL = formatter.formatURLPref("app.releaseNotesURL");
+} catch(e) {
+  releaseNotesURL = "about:blank";
+}
 if (releaseNotesURL != "about:blank") {
   var relnotes = document.getElementById("releaseNotesURL");
   relnotes.setAttribute("href", releaseNotesURL);
   relnotes.parentNode.removeAttribute("hidden");
 }
 
-var vendorURL = formatter.formatURLPref("app.vendorURL");
+var vendorURL;
+try {
+  vendorURL = formatter.formatURLPref("app.vendorURL");
+} catch(e) {
+  vendorURL = "about:blank";
+}
 if (vendorURL != "about:blank") {
   var vendor = document.getElementById("vendorURL");
   vendor.setAttribute("href", vendorURL);
@@ -25,8 +35,15 @@ var versionNum = Components.classes["@mozilla.org/xre/app-info;1"]
 var version = document.getElementById("version");
 version.textContent += " " + versionNum;
 
+// insert the buildid of the XUL application
+var BuildIDVal = Components.classes["@mozilla.org/xre/app-info;1"]
+                           .getService(Components.interfaces.nsIXULAppInfo)
+                           .appBuildID;
+var buildID = document.getElementById("buildID");
+buildID.textContent += " " + BuildIDVal.slice(0,-6);
+
 // append user agent
 var ua = navigator.userAgent;
 if (ua) {
-  document.getElementById("buildID").textContent += " " + ua;
+  document.getElementById("userAgent").textContent += " " + ua;
 }
diff --git a/toolkit/content/about.xhtml b/toolkit/content/about.xhtml
index d5245928f..1f57ddcc3 100644
--- a/toolkit/content/about.xhtml
+++ b/toolkit/content/about.xhtml
@@ -24,7 +24,6 @@
   <div id="aboutLogoContainer">
     <a id="vendorURL">
       <img src="about:logo" alt="&brandShortName;"/>
-      <p id="version">&about.version;</p>
     </a>
   </div>
 
@@ -33,7 +32,9 @@
     <li>&about.license.beforeTheLink;<a href="about:license">&about.license.linkTitle;</a>&about.license.afterTheLink;</li>
     <li hidden="true">&about.relnotes.beforeTheLink;<a id="releaseNotesURL">&about.relnotes.linkTitle;</a>&about.relnotes.afterTheLink;</li>
     <li>&about.buildconfig.beforeTheLink;<a href="about:buildconfig">&about.buildconfig.linkTitle;</a>&about.buildconfig.afterTheLink;</li>
+    <li id="version">&about.version;</li>
     <li id="buildID">&about.buildIdentifier;</li>
+    <li id="userAgent">&about.userAgent;</li>
     <script type="application/javascript" src="chrome://global/content/about.js"/>
   </ul>
 
diff --git a/toolkit/locales/en-US/chrome/global/about.dtd b/toolkit/locales/en-US/chrome/global/about.dtd
index 6df685747..7ccccd8f2 100644
--- a/toolkit/locales/en-US/chrome/global/about.dtd
+++ b/toolkit/locales/en-US/chrome/global/about.dtd
@@ -1,13 +1,13 @@
 <!-- This Source Code Form is subject to the terms of the Mozilla Public
    - License, v. 2.0. If a copy of the MPL was not distributed with this
    - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<!ENTITY about.version                "version">
+<!ENTITY about.version                "Version">
 
 <!-- LOCALIZATION NOTE (about.credits.beforeLink): note that there is no space between this phrase and the linked about.credits.linkTitle phrase, so if your locale needs a space between words, add it at the end of this entity. -->
 <!ENTITY about.credits.beforeLink     "See a list of ">
 <!ENTITY about.credits.linkTitle      "contributors">
 <!-- LOCALIZATION NOTE (about.credits.afterLink): note that there is no space between the linked about.credits.linkTitle phrase and this phrase, so if your locale needs a space between words, add it at the start of this entity. -->
-<!ENTITY about.credits.afterLink      " to the Mozilla Project.">
+<!ENTITY about.credits.afterLink      " to the project.">
 
 <!-- LOCALIZATION NOTE (about.license.beforeTheLink): note that there is no space between this phrase and the linked about.license.linkTitle phrase, so if your locale needs a space between words, add it at the end of this entity. -->
 <!ENTITY about.license.beforeTheLink  "Read the ">
@@ -28,3 +28,4 @@
 <!ENTITY about.buildconfig.afterTheLink  " used for this version.">
 
 <!ENTITY about.buildIdentifier        "Build identifier: ">
+<!ENTITY about.userAgent              "User-agent:">
diff --git a/toolkit/themes/shared/about.css b/toolkit/themes/shared/about.css
index 25f52992a..5c40dbfea 100644
--- a/toolkit/themes/shared/about.css
+++ b/toolkit/themes/shared/about.css
@@ -26,8 +26,8 @@ body {
 }
 
 #aboutLogoContainer {
-  border: 1px solid ThreeDLightShadow;
   width: 300px;
+  margin: 0 auto;
   margin-bottom: 2em;
 }
 
@@ -35,12 +35,6 @@ img {
   border: 0;
 }
 
-#version {
-  font-weight: bold;
-  color: #909090;
-  margin: -24px 0 9px 17px;
-}
-
 ul {
   margin: 0;
   margin-inline-start: 1.5em;