diff --git a/CHANGELOG b/CHANGELOG
index ea21ea6..fdb73ae 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,7 +2,11 @@
 
 * Add Function#curry, Function#delay, Function#defer, and Function#wrap.  Closes #8134.  [Andrew Dupont, Tobie Langel, sam]
 
-*1.5.1* (it is a mystery)
+*1.5.1* (May 1, 2007)
+
+* Don't duplicate the event argument in Function#bindAsEventListener.  Closes #6497.  [wiktor]
+
+* Fix Selector :not-clause chaining.  [Andrew Dupont]
 
 *1.5.1_rc4* (April 27, 2007)
 
diff --git a/src/base.js b/src/base.js
index 263ac65..94356cb 100644
--- a/src/base.js
+++ b/src/base.js
@@ -77,7 +77,7 @@ Object.extend(Function.prototype, {
   bindAsEventListener: function() {
     var __method = this, args = $A(arguments), object = args.shift();
     return function(event) {
-      return __method.apply(object, [(event || window.event)].concat(args).concat($A(arguments)));
+      return __method.apply(object, [event || window.event].concat(args));
     }
   },
   
diff --git a/src/selector.js b/src/selector.js
index 5578d01..37b68eb 100644
--- a/src/selector.js
+++ b/src/selector.js
@@ -218,7 +218,7 @@ Object.extend(Selector, {
     tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
     id:           /^#([\w\-\*]+)(\b|$)/,
     className:    /^\.([\w\-\*]+)(\b|$)/,
-    pseudo:       /^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|\s)/,
+    pseudo:       /^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|\s|(?=:))/,
     attrPresence: /^\[([\w]+)\]/,
     attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\]]*?)\4|([^'"][^\]]*?)))?\]/
   },
diff --git a/test/unit/selector.html b/test/unit/selector.html
index f579200..d43474a 100644
--- a/test/unit/selector.html
+++ b/test/unit/selector.html
@@ -324,6 +324,7 @@
       assertEnumEqual([$('link_2')], $$('#p a:not(a[rel^=external])'), 'attribute 2');
       assertEnumEqual([$('link_2')], $$('#p a:not(a[rel$=nofollow])'), 'attribute 3');
       assertEnumEqual([$('em')], $$('#p a:not(a[rel$="nofollow"]) > em'), 'attribute 4')
+      assertEnumEqual([$('item_2')], $$('#list li:not(#item_1):not(#item_3)'), 'adjacent :not clauses');
     }},
     
     testSelectorWithEnabledDisabledChecked: function() {with(this) {