diff --git a/common/content/abbreviations.js b/common/content/abbreviations.js
index cde225c1..f3d69823 100644
--- a/common/content/abbreviations.js
+++ b/common/content/abbreviations.js
@@ -32,10 +32,8 @@ var Abbreviation = Class("Abbreviation", {
     get modeChar() Abbreviation.modeChar(this.modes)
 }, {
     modeChar: function (_modes) {
-        let result = "";
-        for (let [, mode] in Iterator(_modes))
-            result += modes.getMode(mode).char;
-        if (/^(ic|ci)$/(result))
+        let result = array.uniq(_modes.map(function (m) m.char)).join("");
+        if (result == "ci")
             result = "!";
         return result;
     }
diff --git a/common/content/mappings.js b/common/content/mappings.js
index ada6e35d..4cd189d3 100644
--- a/common/content/mappings.js
+++ b/common/content/mappings.js
@@ -527,7 +527,6 @@ var Mappings = Module("mappings", {
             return null;
         }
         function uniqueModes(modes) {
-            modes = modes.map(modules.modes.closure.getMode);
             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));
diff --git a/common/content/modes.js b/common/content/modes.js
index 1f1b2638..66b55c86 100644
--- a/common/content/modes.js
+++ b/common/content/modes.js
@@ -228,10 +228,11 @@ var Modes = Module("modes", {
 
     getStack: function (idx) this._modeStack[this._modeStack.length - idx - 1] || this._modeStack[0],
 
-    getCharModes: function (chr) [m for (m in values(this._modeMap)) if (m.char == chr)],
+    getCharModes: function (chr) (this.modeChars[chr] || []).slice(),
 
     matchModes: function (obj)
-        [m for (m in values(this._modeMap)) if (Object.keys(obj).every(function (k) obj[k] == (m[k] || false)))],
+        this._modes.filter(function (mode) Object.keys(obj)
+                                                 .every(function (k) obj[k] == (mode[k] || false))),
 
     // show the current mode string in the command line
     show: function show() {
diff --git a/common/modules/base.jsm b/common/modules/base.jsm
index 8cd98383..e239825e 100644
--- a/common/modules/base.jsm
+++ b/common/modules/base.jsm
@@ -159,7 +159,11 @@ function defineModule(name, params) {
 
 defineModule.loadLog = [];
 Object.defineProperty(defineModule.loadLog, "push", {
-    value: function (val) { defineModule.dump(val + "\n"); this[this.length] = val; }
+    value: function (val) {
+        if (false)
+            defineModule.dump(val + "\n");
+        this[this.length] = Date.now() + " " + val;
+    }
 });
 defineModule.dump = function dump_() {
     let msg = Array.map(arguments, function (msg) {
diff --git a/common/modules/overlay.jsm b/common/modules/overlay.jsm
index ecf63ec5..837ddf2e 100644
--- a/common/modules/overlay.jsm
+++ b/common/modules/overlay.jsm
@@ -250,7 +250,7 @@ var Overlay = Module("Overlay", {
                 deferredInit["load"].forEach(call);
                 modules.times = update({}, defineModule.times);
 
-                util.dump("Loaded in " + (Date.now() - start) + "ms");
+                defineModule.loadLog.push("Loaded in " + (Date.now() - start) + "ms");
 
                 modules.events.addSessionListener(window, "unload", function onUnload() {
                     window.removeEventListener("unload", onUnload.wrapped, false);
diff --git a/common/modules/util.jsm b/common/modules/util.jsm
index ce70bbd2..6457c14a 100644
--- a/common/modules/util.jsm
+++ b/common/modules/util.jsm
@@ -932,7 +932,7 @@ var Util = Module("Util", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference]),
 
     observe: {
         "dactyl-cleanup-modules": function () {
-            util.dump("dactyl: util: observe: dactyl-cleanup-modules");
+            defineModule.loadLog.push("dactyl: util: observe: dactyl-cleanup-modules");
 
             for (let module in values(defineModule.modules))
                 if (module.cleanup) {
@@ -945,12 +945,12 @@ var Util = Module("Util", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference]),
         "dactyl-rehash": function () {
             services.observer.removeObserver(this, "dactyl-rehash");
 
-            util.dump("dactyl: util: observe: dactyl-rehash");
+            defineModule.loadLog.push("dactyl: util: observe: dactyl-rehash");
             if (this.rehashing)
                 JSMLoader.purge();
             else
                 for (let module in values(defineModule.modules)) {
-                    util.dump("dactyl: util: init(" + module + ")");
+                    defineModule.loadLog.push("dactyl: util: init(" + module + ")");
                     if (module.reinit)
                         module.reinit();
                     else
@@ -974,7 +974,7 @@ var Util = Module("Util", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference]),
         if (!window.dactylOverlays)
             window.dactylOverlays = [];
 
-        util.dump("load overlays", window.document.documentURI);
+        defineModule.loadLog.push("load overlays " + window.document.documentURI);
 
         for each (let obj in util.overlays[window.document.documentURI] || []) {
             if (window.dactylOverlays.indexOf(obj) >= 0)
@@ -988,7 +988,7 @@ var Util = Module("Util", XPCOM([Ci.nsIObserver, Ci.nsISupportsWeakReference]),
         if (!doc.dactylOverlayElements)
             doc.dactylOverlayElements = [];
 
-        util.dump("load overlay", doc.documentURI, String(obj).substr(0, 60));
+        defineModule.loadLog.push("load overlays " + doc.documentURI + " " + String(obj).substr(0, 60));
 
         function overlay(key, fn) {
             if (obj[key]) {
diff --git a/pentadactyl/NEWS b/pentadactyl/NEWS
index f1da3abf..5daa50ef 100644
--- a/pentadactyl/NEWS
+++ b/pentadactyl/NEWS
@@ -1,4 +1,4 @@
-1.0b4pre:
+1.0b4:
     * Extensive Firefox 4 support, including:
       - Fully restartless. Can now be installed, uninstalled,
         enabled, disabled, and upgraded without restarting Firefox.
diff --git a/pentadactyl/install.rdf b/pentadactyl/install.rdf
index 7e7429b7..b5f1899d 100644
--- a/pentadactyl/install.rdf
+++ b/pentadactyl/install.rdf
@@ -4,7 +4,7 @@
     <Description about="urn:mozilla:install-manifest"
         em:id="pentadactyl@dactyl.googlecode.com"
         em:name="Pentadactyl"
-        em:version="1.0b4pre"
+        em:version="1.0b4"
         em:description="Firefox for Vim and Links addicts"
         em:homepageURL="http://dactyl.sourceforge.net/pentadactyl"
         em:iconURL="chrome://pentadactyl/skin/icon.png"