diff --git a/package.json b/package.json
index ba2da062..46b9527a 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
     "name": "c9",
     "description": "New Cloud9 Client",
-    "version": "3.1.2605",
+    "version": "3.1.2623",
     "author": "Ajax.org B.V. <info@ajax.org>",
     "private": true,
     "main": "bin/c9",
@@ -59,7 +59,7 @@
     ],
     "c9plugins": {
         "c9.ide.language": "#eb4b0cd95a",
-        "c9.ide.language.core": "#82e9ed1729",
+        "c9.ide.language.core": "#6d594f4eda",
         "c9.ide.language.css": "#46ad561506",
         "c9.ide.language.generic": "#b47cbe58f9",
         "c9.ide.language.html": "#6ecb73a17b",
@@ -69,7 +69,7 @@
         "c9.ide.language.javascript.eslint": "#cb9e3f5a8e",
         "c9.ide.language.javascript.tern": "#4dedbbef74",
         "c9.ide.language.javascript.infer": "#b9c2e4bdb8",
-        "c9.ide.language.jsonalyzer": "#d5444f6b2c",
+        "c9.ide.language.jsonalyzer": "#60a25f327a",
         "c9.ide.language.codeintel": "#4e0a272229",
         "c9.ide.collab": "#79b094a770",
         "c9.ide.local": "#9169fec157",
@@ -95,7 +95,7 @@
         "c9.ide.imgeditor": "#612e75ef4f",
         "c9.ide.immediate": "#76c8e3213a",
         "c9.ide.installer": "#b2e4ba0a92",
-        "c9.ide.language.python": "#aff0772c78",
+        "c9.ide.language.python": "#15e7ff9a3f",
         "c9.ide.language.go": "#6ce1c7a7ef",
         "c9.ide.mount": "#6ddfd05db3",
         "c9.ide.navigate": "#5d5707058c",
diff --git a/plugins/c9.vfs.client/vfs.ping.js b/plugins/c9.vfs.client/vfs.ping.js
index 4e02ade7..05bdbc9c 100644
--- a/plugins/c9.vfs.client/vfs.ping.js
+++ b/plugins/c9.vfs.client/vfs.ping.js
@@ -9,6 +9,7 @@ define(function(require, exports, module) {
         var Plugin = imports.Plugin;
         var c9 = imports.c9;
         var ext = imports.ext;
+        var vfs = imports.vfs;
 
         /***** Initialization *****/
 
@@ -61,6 +62,9 @@ define(function(require, exports, module) {
             }
 
             if (!api) return callback(new Error("Client is offline"));
+            
+            if (!vfs.isIdle())
+                return vfs.connection.once("message", ping.bind(null, callback));
 
             var start = Date.now();
             api.ping("serverTime", function(err, response) {
diff --git a/plugins/c9.vfs.client/vfs_client.js b/plugins/c9.vfs.client/vfs_client.js
index 0fb2d9c6..9ca3bf84 100644
--- a/plugins/c9.vfs.client/vfs_client.js
+++ b/plugins/c9.vfs.client/vfs_client.js
@@ -329,6 +329,11 @@ define(function(require, exports, module) {
                 bufferedVfsCalls.push([method, path, options, callback]);
         }
         
+        function isIdle() {
+            return !Object.keys(connection.unacked).length &&
+                consumer && !Object.keys(consumer.callbacks || {}).length;
+        }
+        
         /***** Lifecycle *****/
         
         plugin.on("load", function(){
@@ -429,7 +434,9 @@ define(function(require, exports, module) {
             // Extending the API
             use: vfsCall.bind(null, "use"),
             extend: vfsCall.bind(null, "extend"),
-            unextend: vfsCall.bind(null, "unextend")
+            unextend: vfsCall.bind(null, "unextend"),
+            
+            isIdle: isIdle,
         });
         
         register(null, {