diff --git a/XenAdmin/Alerts/Types/XenServerPatchAlert.cs b/XenAdmin/Alerts/Types/XenServerPatchAlert.cs
index 145e02963..555a65fb8 100644
--- a/XenAdmin/Alerts/Types/XenServerPatchAlert.cs
+++ b/XenAdmin/Alerts/Types/XenServerPatchAlert.cs
@@ -112,7 +112,12 @@ namespace XenAdmin.Alerts
 
         public override string Description
         {
-            get { return Patch.Description; }
+            get
+            {
+                if (Patch.InstallationSize != 0)
+                    return string.Format(Messages.PATCH_DESCRIPTION_AND_INSTALLATION_SIZE, Patch.Description, Util.DiskSizeString(Patch.InstallationSize));
+                return Patch.Description;
+            }
         }
 
         public override string Name
diff --git a/XenAdminTests/UnitTests/AlertTests/XenServerPatchAlertTests.cs b/XenAdminTests/UnitTests/AlertTests/XenServerPatchAlertTests.cs
index 03a3243e1..cab1bc9f6 100644
--- a/XenAdminTests/UnitTests/AlertTests/XenServerPatchAlertTests.cs
+++ b/XenAdminTests/UnitTests/AlertTests/XenServerPatchAlertTests.cs
@@ -52,7 +52,7 @@ namespace XenAdminTests.UnitTests.AlertTests
         [Test]
         public void TestAlertWithConnectionAndHosts()
         {
-            XenServerPatch p = new XenServerPatch("uuid", "name", "My description", "guidance", "6.0.1", "http://url", "http://patchUrl", new DateTime(2011, 4, 1).ToString(), "");
+            XenServerPatch p = new XenServerPatch("uuid", "name", "My description", "guidance", "6.0.1", "http://url", "http://patchUrl", new DateTime(2011, 4, 1).ToString(), "", "");
             XenServerPatchAlert alert = new XenServerPatchAlert(p);
             alert.IncludeConnection(connA.Object);
             alert.IncludeConnection(connB.Object);
@@ -80,7 +80,7 @@ namespace XenAdminTests.UnitTests.AlertTests
         [Test]
         public void TestAlertWithHostsAndNoConnection()
         {
-            XenServerPatch p = new XenServerPatch("uuid", "name", "My description", "guidance", "6.0.1", "http://url", "http://patchUrl", new DateTime(2011, 4, 1).ToString(), "1");
+            XenServerPatch p = new XenServerPatch("uuid", "name", "My description", "guidance", "6.0.1", "http://url", "http://patchUrl", new DateTime(2011, 4, 1).ToString(), "1", "");
             XenServerPatchAlert alert = new XenServerPatchAlert(p);
             alert.IncludeHosts(new List<Host>() { hostA.Object, hostB.Object });
 
@@ -106,7 +106,7 @@ namespace XenAdminTests.UnitTests.AlertTests
         [Test]
         public void TestAlertWithConnectionAndNoHosts()
         {
-            XenServerPatch p = new XenServerPatch("uuid", "name", "My description", "guidance", "6.0.1", "http://url", "http://patchUrl", new DateTime(2011, 4, 1).ToString(), "0");
+            XenServerPatch p = new XenServerPatch("uuid", "name", "My description", "guidance", "6.0.1", "http://url", "http://patchUrl", new DateTime(2011, 4, 1).ToString(), "0", "");
             XenServerPatchAlert alert = new XenServerPatchAlert(p);
             alert.IncludeConnection(connA.Object);
             alert.IncludeConnection(connB.Object);
@@ -133,7 +133,7 @@ namespace XenAdminTests.UnitTests.AlertTests
         [Test]
         public void TestAlertWithNoConnectionAndNoHosts()
         {
-            XenServerPatch p = new XenServerPatch("uuid", "name", "My description", "guidance", "6.0.1", "http://url", "http://patchUrl", new DateTime(2011, 4, 1).ToString(), "5");
+            XenServerPatch p = new XenServerPatch("uuid", "name", "My description", "guidance", "6.0.1", "http://url", "http://patchUrl", new DateTime(2011, 4, 1).ToString(), "5", "");
             XenServerPatchAlert alert = new XenServerPatchAlert(p);
 
             IUnitTestVerifier validator = new VerifyGetters(alert);
diff --git a/XenModel/Actions/Updates/DownloadUpdatesXmlAction.cs b/XenModel/Actions/Updates/DownloadUpdatesXmlAction.cs
index 8b910ac06..667744e92 100644
--- a/XenModel/Actions/Updates/DownloadUpdatesXmlAction.cs
+++ b/XenModel/Actions/Updates/DownloadUpdatesXmlAction.cs
@@ -135,6 +135,7 @@ namespace XenAdmin.Actions
                     string patchUrl = "";
                     string timestamp = "";
                     string priority = "";
+                    string installationSize = "";
 
                     foreach (XmlAttribute attrib in version.Attributes)
                     {
@@ -156,13 +157,15 @@ namespace XenAdmin.Actions
                             timestamp = attrib.Value;
                         else if (attrib.Name == "priority")
                             priority = attrib.Value;
+                        else if (attrib.Name == "installation-size")
+                            installationSize = attrib.Value;
                     }
 
                     var conflictingPatches = GetPatchDependencies(version, ConflictingPatchesNode, ConflictingPatchNode);
                     var requiredPatches = GetPatchDependencies(version, RequiredPatchesNode, RequiredPatchNode);
 
 					XenServerPatches.Add(new XenServerPatch(uuid, name, description, guidance, patchVersion, url,
-                                                            patchUrl, timestamp, priority, conflictingPatches, requiredPatches));
+                                                            patchUrl, timestamp, priority, installationSize, conflictingPatches, requiredPatches));
                 }
             }
         }
diff --git a/XenModel/Actions/Updates/XenServerPatch.cs b/XenModel/Actions/Updates/XenServerPatch.cs
index 08b6daa83..638db6a1e 100644
--- a/XenModel/Actions/Updates/XenServerPatch.cs
+++ b/XenModel/Actions/Updates/XenServerPatch.cs
@@ -45,6 +45,7 @@ namespace XenAdmin.Core
         public readonly string PatchUrl;
         public readonly DateTime TimeStamp;
         public readonly int Priority;
+        public readonly long InstallationSize; // installation size, in btyes
 
         public readonly List<string> ConflictingPatches;
         public readonly List<string> RequiredPatches;
@@ -52,7 +53,7 @@ namespace XenAdmin.Core
         private const int DEFAULT_PRIORITY = 2;
 
         public XenServerPatch(string uuid, string name, string description, string guidance, string version, string url,
-            string patchUrl, string timestamp, string priority)
+            string patchUrl, string timestamp, string priority, string installationSize)
         {
             _uuid = uuid.ToLowerInvariant();
             Name = name;
@@ -66,11 +67,13 @@ namespace XenAdmin.Core
             DateTime.TryParse(timestamp, out TimeStamp);
             if (!Int32.TryParse(priority, out Priority))
                 Priority = DEFAULT_PRIORITY;
+            if (!Int64.TryParse(installationSize, out InstallationSize))
+                InstallationSize = 0;
         }
 
         public XenServerPatch(string uuid, string name, string description, string guidance, string version, string url,
-            string patchUrl, string timestamp, string priority, List<string> conflictingPatches, List<string> requiredPatches)
-            :this(uuid, name, description, guidance, version, url, patchUrl, timestamp, priority)
+            string patchUrl, string timestamp, string priority, string installationSize, List<string> conflictingPatches, List<string> requiredPatches)
+            : this(uuid, name, description, guidance, version, url, patchUrl, timestamp, priority, installationSize)
         {
             ConflictingPatches = conflictingPatches;
             RequiredPatches = requiredPatches;
diff --git a/XenModel/Messages.Designer.cs b/XenModel/Messages.Designer.cs
index ef35a6d44..99d2a6902 100644
--- a/XenModel/Messages.Designer.cs
+++ b/XenModel/Messages.Designer.cs
@@ -24001,6 +24001,16 @@ namespace XenAdmin {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to {0} 
+        ///Installation size: {1}.
+        /// </summary>
+        public static string PATCH_DESCRIPTION_AND_INSTALLATION_SIZE {
+            get {
+                return ResourceManager.GetString("PATCH_DESCRIPTION_AND_INSTALLATION_SIZE", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to {0} 
         ///Date modified: {1}
diff --git a/XenModel/Messages.resx b/XenModel/Messages.resx
index 783d43144..dc1aa921f 100644
--- a/XenModel/Messages.resx
+++ b/XenModel/Messages.resx
@@ -8512,6 +8512,10 @@ It is strongly recommended that you Cancel and apply the latest version of the p
   <data name="PATCH_APPLIED" xml:space="preserve">
     <value>Update '{0}' Applied to Server '{1}'</value>
   </data>
+  <data name="PATCH_DESCRIPTION_AND_INSTALLATION_SIZE" xml:space="preserve">
+    <value>{0} 
+Installation size: {1}</value>
+  </data>
   <data name="PATCH_EXPANDED_DESCRIPTION" xml:space="preserve">
     <value>{0} 
 Date modified: {1}