diff --git a/node_modules/ace_tree/lib/ace_tree/data_provider.js b/node_modules/ace_tree/lib/ace_tree/data_provider.js
index 32d2f0ea..4709fe1c 100644
--- a/node_modules/ace_tree/lib/ace_tree/data_provider.js
+++ b/node_modules/ace_tree/lib/ace_tree/data_provider.js
@@ -89,9 +89,9 @@ var DataProvider = function(root) {
             var childNode = ch[j];
             if (this.isOpen(childNode)) {
                 this.setOpen(childNode, false);
-                this.open(childNode, deep - 1);
+                this.open(childNode, deep - 1, silent);
             } else if (deep > 0) {
-                this.open(childNode, deep - 1);
+                this.open(childNode, deep - 1, silent);
             }
         }
         
diff --git a/package.json b/package.json
index a1f72b82..1324afee 100644
--- a/package.json
+++ b/package.json
@@ -97,8 +97,8 @@
         "c9.ide.navigate": "#1fbb7cd53b",
         "c9.ide.newresource": "#981a408a7b",
         "c9.ide.openfiles": "#2ae85a9e33",
-        "c9.ide.preview": "#8f87ff2f6a",
-        "c9.ide.preview.browser": "#c5b9a129de",
+        "c9.ide.preview": "#2acbe41e62",
+        "c9.ide.preview.browser": "#04760484d1",
         "c9.ide.preview.markdown": "#bc846e1562",
         "c9.ide.pubsub": "#a85fb27eca",
         "c9.ide.readonly": "#e67bb593bd",
@@ -110,7 +110,7 @@
         "c9.ide.run.debug.xdebug": "#a1b39e0ac4",
         "c9.ide.save": "#f8aaf93ea1",
         "c9.ide.scm": "#ca3c94b84f",
-        "c9.ide.terminal.monitor": "#a0d1f02991",
+        "c9.ide.terminal.monitor": "#1ccac33b0d",
         "c9.ide.test": "#a282ec1619",
         "c9.ide.test.mocha": "#fc053b23d2",
         "c9.ide.theme.flat": "#81dadeee55",
diff --git a/plugins/c9.fs/fs.cache.xml.js b/plugins/c9.fs/fs.cache.xml.js
index da06cc24..de85131e 100644
--- a/plugins/c9.fs/fs.cache.xml.js
+++ b/plugins/c9.fs/fs.cache.xml.js
@@ -574,7 +574,10 @@ define(function(require, exports, module) {
                     node.contenttype = stat.mime || util.getContentType(name);
                     node.status = "loaded";
                 }
-
+                if (typeof stat.mtime !== "number" && stat.mtime) {
+                    // TODO fix localfs to not send date objects here
+                    stat.mtime = +stat.mtime;
+                }
                 if (stat.size != undefined)
                     node.size = stat.size;
                 if (stat.mtime != undefined)
@@ -594,14 +597,6 @@ define(function(require, exports, module) {
             
             node.children = null;
             
-            if (typeof node.mtime !== "number" && node.mtime) {
-                // why Date ends up here?
-                reportError(new Error("Date in fs cache"), {
-                    stat: stat,
-                    mtime: node.mtime,
-                    path: node.path
-                });
-            }
             if (!updating) {
                 if (!modified.length)
                     modified.push(parent);
diff --git a/plugins/c9.ide.keys/commands.js b/plugins/c9.ide.keys/commands.js
index b95d6d6c..0cab430e 100644
--- a/plugins/c9.ide.keys/commands.js
+++ b/plugins/c9.ide.keys/commands.js
@@ -321,6 +321,7 @@ define(function(require, exports, module) {
                 },
                 commands.openpreferences,
                 commands.passKeysToBrowser,
+                commands.commands,
                 commands.find,
                 commands.openterminal,
                 commands.navigate,
diff --git a/plugins/c9.ide.terminal/aceterm/input.js b/plugins/c9.ide.terminal/aceterm/input.js
index 2fb3e2bc..18289eb8 100644
--- a/plugins/c9.ide.terminal/aceterm/input.js
+++ b/plugins/c9.ide.terminal/aceterm/input.js
@@ -1,6 +1,7 @@
 define(function(require, exports, module) {
     var isWindows = require("ace/lib/useragent").isWindows;
     module.exports = function initInput(ace) {
+        // use showkey --ascii to test
         var HashHandler = require("ace/keyboard/hash_handler").HashHandler;
         var KEY_MODS = require("ace/lib/keys").KEY_MODS;
         var TERM_MODS = {
@@ -98,7 +99,7 @@ define(function(require, exports, module) {
             if (isControl) {
                 if (keyCode >= 65 && keyCode <= 90) {
                     key = String.fromCharCode(keyCode - 64);
-                } else if (keyCode === 32) {
+                } else if (keyCode === 32 || keyCode == 192) {
                     // NUL
                     key = String.fromCharCode(0);
                 } else if (keyCode >= 51 && keyCode <= 55) {
@@ -116,6 +117,9 @@ define(function(require, exports, module) {
                 } else if (keyCode === 189 || keyCode === 173) {
                     // _
                     key = String.fromCharCode(31);
+                } else if (keyCode === 220) {
+                    // SIGQUIT
+                    key = String.fromCharCode(28);
                 }
             } else if (isMeta) {
                 if (keyCode >= 65 && keyCode <= 90) {
diff --git a/plugins/c9.ide.terminal/aceterm/libterm.js b/plugins/c9.ide.terminal/aceterm/libterm.js
index 98a28b5d..4f30c487 100644
--- a/plugins/c9.ide.terminal/aceterm/libterm.js
+++ b/plugins/c9.ide.terminal/aceterm/libterm.js
@@ -301,8 +301,10 @@ Terminal.prototype.scroll = function() {//TODO optimize lines
   var row;
 
   if (++this.ybase === Terminal.scrollback) {
-    this.ybase = this.ybase / 2 | 0;
-    this.lines = this.lines.slice(-(this.ybase + this.rows) + 1);
+    var lineCount = this.ybase / 2 | 0;
+    this.emit("discardOldScrollback", lineCount);
+    this.ybase -= lineCount;
+    this.lines = this.lines.slice(lineCount);
   }
 
   this.ydisp = this.ybase;