diff --git a/common/content/browser.js b/common/content/browser.js
index bfbbc861..e5529a30 100644
--- a/common/content/browser.js
+++ b/common/content/browser.js
@@ -28,8 +28,11 @@ var Browser = Module("browser", XPCOM(Ci.nsISupportsWeakReference, ModuleBase),
         "content-document-global-created": function (win, uri) {
             let top = util.topWindow(win);
 
-            if (top == window)
-                this._triggerLoadAutocmd("PageLoadPre", win.document, win.location.href != "null" ? window.location.href : uri);
+            if (uri == "null")
+                uri = null;
+
+            if (top == window && (win.location.href || uri))
+                this._triggerLoadAutocmd("PageLoadPre", win.document, win.location.href || uri);
         }
     },
 
diff --git a/common/content/events.js b/common/content/events.js
index 9e36d766..3c72b4e8 100644
--- a/common/content/events.js
+++ b/common/content/events.js
@@ -1315,7 +1315,10 @@ var Events = Module("events", {
         },
 
         keyup: function onKeyUp(event) {
-            this.keyEvents.push(event);
+            if (this.type == "keydown")
+                this.keyEvents.push(event);
+            else
+                this.keyEvents = [];
 
             let isMacro = event.isMacro || this.feedingEvent && this.feedingEvent.isMacro;
             if (this.lastKeyFake && !isMacro)
diff --git a/common/content/mappings.js b/common/content/mappings.js
index ed4104d6..97042113 100644
--- a/common/content/mappings.js
+++ b/common/content/mappings.js
@@ -663,7 +663,9 @@ var Mappings = Module("mappings", {
         function uniqueModes(modes) {
             let chars = [k for ([k, v] in Iterator(modules.modes.modeChars))
                          if (v.every(function (mode) modes.indexOf(mode) >= 0))];
-            return array.uniq(modes.filter(function (m) chars.indexOf(m.char) < 0).concat(chars));
+            return array.uniq(modes.filter(function (m) chars.indexOf(m.char) < 0)
+                                   .map(function (m) m.name.toLowerCase())
+                                   .concat(chars));
         }
 
         commands.add(["feedkeys", "fk"],
diff --git a/common/modules/base.jsm b/common/modules/base.jsm
index ded0ab18..0310cfc1 100644
--- a/common/modules/base.jsm
+++ b/common/modules/base.jsm
@@ -68,11 +68,9 @@ if (!Object.defineProperties)
     }
 if (!Object.freeze)
     Object.freeze = function freeze(obj) {};
-if (!Object.getOwnPropertyDescriptor)
-    Object.getOwnPropertyDescriptor = function getOwnPropertyDescriptor(obj, prop) {
+if (!Object.getPropertyDescriptor)
+    Object.getPropertyDescriptor = function getOwnPropertyDescriptor(obj, prop) {
         try {
-            if (!hasOwnProperty.call(obj, prop))
-                return undefined;
             let desc = {
                 configurable: true,
                 enumerable: propertyIsEnumerable.call(obj, prop)
@@ -93,6 +91,11 @@ if (!Object.getOwnPropertyDescriptor)
             throw e.stack ? e : Error(e);
         }
     };
+if (!Object.getOwnPropertyDescriptor)
+    Object.getOwnPropertyDescriptor = function getOwnPropertyDescriptor(obj, prop) {
+        if (hasOwnProperty.call(obj, prop))
+            return Object.getPropertyDescriptor(obj, prop);
+    };
 if (!Object.getOwnPropertyNames)
     Object.getOwnPropertyNames = function getOwnPropertyNames(obj, _debugger) {
         try {
diff --git a/common/modules/contexts.jsm b/common/modules/contexts.jsm
index e5791435..57c18197 100644
--- a/common/modules/contexts.jsm
+++ b/common/modules/contexts.jsm
@@ -374,12 +374,19 @@ var Contexts = Module("contexts", {
     bindMacro: function (args, default_, params) {
         const { dactyl, events, modules } = this.modules;
 
+        function Proxy(obj, key) Class.Property({
+            configurable: true,
+            enumerable: true,
+            get: function Proxy_get() process(obj[key]),
+            set: function Proxy_set(val) obj[key] = val
+        })
+
         let process = util.identity;
 
         if (callable(params))
             var makeParams = function makeParams(self, args)
-                iter.toObject([k, process(v)]
-                               for ([k, v] in iter(params.apply(self, args))));
+                let (obj = params.apply(self, args))
+                    iter.toObject([k, Proxy(obj, k)] for (k in properties(obj)));
         else if (params)
             makeParams = function makeParams(self, args)
                 iter.toObject([name, process(args[i])]
diff --git a/common/modules/javascript.jsm b/common/modules/javascript.jsm
index 7d8de811..82f1152b 100644
--- a/common/modules/javascript.jsm
+++ b/common/modules/javascript.jsm
@@ -54,7 +54,7 @@ var JavaScript = Module("javascript", {
 
     lazyInit: true,
 
-    newContext: function () this.modules.newContext(this.modules.userContext),
+    newContext: function () this.modules.newContext(this.modules.userContext, true),
 
     get completers() JavaScript.completers, // For backward compatibility
 
diff --git a/common/modules/util.jsm b/common/modules/util.jsm
index fe5fab3c..d183b9c8 100644
--- a/common/modules/util.jsm
+++ b/common/modules/util.jsm
@@ -1326,9 +1326,15 @@ var Util = Module("Util", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference]),
             if (desc.value instanceof Class.Property)
                 desc = desc.value.init(k) || desc.value;
 
-            for (let obj = object; obj && !orig; obj = Object.getPrototypeOf(obj))
-                if (orig = Object.getOwnPropertyDescriptor(obj, k))
-                    Object.defineProperty(original, k, orig);
+            if (k in object) {
+                for (let obj = object; obj && !orig; obj = Object.getPrototypeOf(obj))
+                    if (orig = Object.getOwnPropertyDescriptor(obj, k))
+                        Object.defineProperty(original, k, orig);
+
+                if (!orig)
+                    if (orig = Object.getPropertyDescriptor(object, k))
+                        Object.defineProperty(original, k, orig);
+            }
 
             // Guard against horrible add-ons that use eval-based monkey
             // patching.
@@ -1668,7 +1674,7 @@ var Util = Module("Util", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference]),
         catch (e) {}
 
         let ary = host.split(".");
-        ary = [ary.slice(i).join(".") for (i in util.range(ary.length - 1, 0, -1))];
+        ary = [ary.slice(i).join(".") for (i in util.range(ary.length, 0, -1))];
         return ary.filter(function (h) h.length >= base.length);
     },
 
@@ -1928,7 +1934,7 @@ var Util = Module("Util", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference]),
         let res = [], seen = {};
         (function rec(frame) {
             try {
-                res = res.concat(util.subdomains(frame.location.host));
+                res = res.concat(util.subdomains(frame.location.hostname));
             }
             catch (e) {}
             Array.forEach(frame.frames, rec);