diff --git a/IPython/html/static/notebook/js/codecell.js b/IPython/html/static/notebook/js/codecell.js
index de9fa14..d168333 100644
--- a/IPython/html/static/notebook/js/codecell.js
+++ b/IPython/html/static/notebook/js/codecell.js
@@ -66,7 +66,6 @@ var IPython = (function (IPython) {
         this.input_prompt_number = null;
         this.collapsed = false;
         this.cell_type = "code";
-        this.last_msg_id = null;
 
 
         var cm_overwrite_options  = {
@@ -241,12 +240,9 @@ var IPython = (function (IPython) {
      * @method execute
      */
     CodeCell.prototype.execute = function () {
-        this.output_area.clear_output();
+        this.output_area.clear_output(true, true, true);
         this.set_input_prompt('*');
         this.element.addClass("running");
-        if (this.last_msg_id) {
-            this.kernel.clear_callbacks_for_msg(this.last_msg_id);
-        }
         var callbacks = {
             'execute_reply': $.proxy(this._handle_execute_reply, this),
             'output': $.proxy(this.output_area.handle_output, this.output_area),
@@ -254,7 +250,7 @@ var IPython = (function (IPython) {
             'set_next_input': $.proxy(this._handle_set_next_input, this),
             'input_request': $.proxy(this._handle_input_request, this)
         };
-        this.last_msg_id = this.kernel.execute(this.get_text(), callbacks, {silent: false, store_history: true});
+        var msg_id = this.session.kernel.execute(this.get_text(), callbacks, {silent: false, store_history: true});
     };
 
     /**
@@ -390,8 +386,8 @@ var IPython = (function (IPython) {
     };
 
 
-    CodeCell.prototype.clear_output = function (wait) {
-        this.output_area.clear_output(wait);
+    CodeCell.prototype.clear_output = function (stdout, stderr, other) {
+        this.output_area.clear_output(stdout, stderr, other);
     };
 
 
@@ -442,4 +438,4 @@ var IPython = (function (IPython) {
     IPython.CodeCell = CodeCell;
 
     return IPython;
-}(IPython));
+}(IPython));
\ No newline at end of file
diff --git a/IPython/html/static/services/sessions/js/session.js b/IPython/html/static/services/sessions/js/session.js
index 8485719..9242007 100644
--- a/IPython/html/static/services/sessions/js/session.js
+++ b/IPython/html/static/services/sessions/js/session.js
@@ -13,31 +13,31 @@ var IPython = (function (IPython) {
     
     var Session = function(notebook_name, notebook_path, Notebook){
         this.kernel = null;
-        this.kernel_id = null;
-        this.session_id = null;
-        this.notebook_name = notebook_name;
-        this.notebook_path = notebook_path;
+        this.id = null;
+        this.name = notebook_name;
+        this.path = notebook_path;
         this.notebook = Notebook;
         this._baseProjectUrl = Notebook.baseProjectUrl() 
     };
     
     Session.prototype.start = function() {
         var that = this
-        var notebook = {'notebook':{'name': this.notebook_name, 'path': this.notebook_path}}
+        var notebook = {'notebook':{'name': this.name, 'path': this.path}}
         var settings = {
             processData : false,
             cache : false,
             type : "POST",
             data: JSON.stringify(notebook),
             dataType : "json",
+            success : $.proxy(this.start_kernel, that),
         };
         var url = this._baseProjectUrl + 'api/sessions';
         $.ajax(url, settings);
     };
     
     Session.prototype.notebook_rename = function (name, path) {
-        this.notebook_name = name;
-        this.notebook_path = path;
+        this.name = name;
+        this.path = path;
         var notebook = {'notebook':{'name':name, 'path': path}};
         var settings = {
             processData : false,
@@ -68,7 +68,7 @@ var IPython = (function (IPython) {
      * @method start_kernel
      */
     Session.prototype.start_kernel = function (json) {
-        this.session_id = json.id;
+        this.id = json.id;
         this.kernel_content = json.kernel;
         var base_url = $('body').data('baseKernelUrl') + "api/kernels";
         this.kernel = new IPython.Kernel(base_url, this.session_id);
diff --git a/IPython/html/static/tree/js/notebooklist.js b/IPython/html/static/tree/js/notebooklist.js
index 4f82af9..c433f01 100644
--- a/IPython/html/static/tree/js/notebooklist.js
+++ b/IPython/html/static/tree/js/notebooklist.js
@@ -112,14 +112,15 @@ var IPython = (function (IPython) {
 
     NotebookList.prototype.sessions_loaded = function(data){
         this.sessions = new Object();
+		console.log(data)
         var len = data.length;
         if (len != 0) {
             for (var i=0; i<len; i++) {
-                if (data[i]['path']==null) {
-                    nb_path = data[i]['name'];
+                if (data[i]['notebook']['path']==null) {
+                    nb_path = data[i]['notebook']['name'];
                 }
                 else {
-                    nb_path = data[i]['path'] + data[i]['name'];
+                    nb_path = data[i]['notebook']['path'] + data[i]['notebook']['name'];
                 }
                 this.sessions[nb_path]= data[i]['id'];
             }
@@ -352,4 +353,3 @@ var IPython = (function (IPython) {
     return IPython;
 
 }(IPython));
-