diff --git a/ChangeLog b/ChangeLog
index e0c25c37e..6b8a6eb35 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
 2011-10-14  Francis Lachapelle  <flachapelle@inverse.ca>
 
+	* UI/WebServerResources/SOGoMailDataSource.js (load): associated a
+	unique id to the source using the url and its parameters.
+
+	* UI/WebServerResources/SOGoDataTable.js (render): add the new
+	source id to the current render id. This should solve incorrect
+	messages appearing when fast-switching between folders or sort order.
+
 	* SoObjects/SOGo/NSString+Utilities.m (-_rangeOfURLInRange:):
 	fixed handling of brackets (inequality signs <>).
 
diff --git a/UI/WebServerResources/MailerUI.js b/UI/WebServerResources/MailerUI.js
index 4ddec2c6e..772bfd6d3 100644
--- a/UI/WebServerResources/MailerUI.js
+++ b/UI/WebServerResources/MailerUI.js
@@ -156,7 +156,7 @@ function markMailInWindow(win, msguid, markread) {
                         img.setAttribute("title", title);
                 }
                 else {
-                    log ("No IMG found for " + msguid);
+                    log ("No IMG found for message " + msguid);
                 }
                 unseenCount = 1;
             }
@@ -169,6 +169,9 @@ function markMailInWindow(win, msguid, markread) {
             }
         }
     }
+    else {
+        log ("No row found for message " + msguid);
+    }
 
     return (unseenCount != 0);
 }
@@ -1658,6 +1661,7 @@ function loadMessageCallback(http) {
     else if (http.status == 404) {
         showAlertDialog (_("The message you have selected doesn't exist anymore."));
 	Mailer.dataTable.remove(http.callbackData.msguid);
+	Mailer.currentMessages[Mailer.currentMailbox] = null;
     }
     else
         log("messageCallback: problem during ajax request: " + http.status);
diff --git a/UI/WebServerResources/SOGoDataTable.js b/UI/WebServerResources/SOGoDataTable.js
index 9eebfc016..fd9189dd0 100644
--- a/UI/WebServerResources/SOGoDataTable.js
+++ b/UI/WebServerResources/SOGoDataTable.js
@@ -157,7 +157,7 @@ var SOGoDataTableInterface = {
         index = start;
         count = end - start;
 
-        this.currentRenderID = index + "-" + count;
+        this.currentRenderID = this.dataSource.id + "/" + index + "-" + count;
 
         // Query the data source only if at least one row is not loaded
         if (refresh === true ||
diff --git a/UI/WebServerResources/SOGoMailDataSource.js b/UI/WebServerResources/SOGoMailDataSource.js
index 0bcfae667..5bc53820e 100644
--- a/UI/WebServerResources/SOGoMailDataSource.js
+++ b/UI/WebServerResources/SOGoMailDataSource.js
@@ -5,6 +5,7 @@ SOGoMailDataSource = Class.create({
         initialize: function(dataTable, url) {
             // Instance variables
             this.dataTable = dataTable;
+            this.id = url;
             this.url = url;
             
             this.uids = new Array();
@@ -79,6 +80,7 @@ SOGoMailDataSource = Class.create({
             }
             else
                 params = "";
+            this.id = this.url + "?" + params;
 
 //            log ("MailDataSource.load() " + params);
             triggerAjaxRequest(this.url + "/uids",