diff --git a/dist/lodash.compat.js b/dist/lodash.compat.js
index 769ab9fee..f31211704 100644
--- a/dist/lodash.compat.js
+++ b/dist/lodash.compat.js
@@ -23,7 +23,7 @@
   var indicatorObject = {};
 
   /** Used to prefix keys to avoid issues with `__proto__` and properties on `Object.prototype` */
-  var keyPrefix = +new Date + '';
+  var keyPrefix = '__1335248838000__';
 
   /** Used as the size when optimizations are enabled for large arrays */
   var largeArraySize = 75;
diff --git a/dist/lodash.compat.min.js b/dist/lodash.compat.min.js
index 3e419d2dd..713657e82 100644
--- a/dist/lodash.compat.min.js
+++ b/dist/lodash.compat.min.js
@@ -59,6 +59,6 @@ r=w(a&&a.prototype)}return t&&(t=e.createCallback(t,u,4),(o?lt:Ht)(n,function(n,
 },e.uniqueId=function(n){var t=++E;return mr(null==n?"":n)+t},e.all=Pt,e.any=Mt,e.detect=qt,e.findWhere=qt,e.foldl=Wt,e.foldr=zt,e.include=Tt,e.inject=Wt,ar(function(){var n={};return Ht(e,function(t,r){e.prototype[r]||(n[r]=t)}),n}(),false),e.first=Ct,e.last=function(n,t,r){var u=0,o=n?n.length:0;if(typeof t!="number"&&null!=t){var a=o;for(t=e.createCallback(t,r,3);a--&&t(n[a],a,n);)u++}else if(u=t,null==u||r)return n?n[o-1]:C;return u=o-u,Et(n,0<u?u:0)},e.sample=function(n,t,r){return n&&typeof n.length!="number"?n=er(n):ne.unindexedChars&&rr(n)&&(n=n.split("")),null==t||r?n?n[gt(0,n.length-1)]:C:(n=Kt(n),n.length=Vr(Ur(0,t),n.length),n)
 },e.take=Ct,e.head=Ct,Ht(e,function(n,t){var r="sample"!==t;e.prototype[t]||(e.prototype[t]=function(t,e){var u=this.__chain__,a=n(this.__wrapped__,t,e);return u||null!=t&&(!e||r&&typeof t=="function")?new o(a,u):a})}),e.VERSION="2.4.1",e.prototype.chain=function(){return this.__chain__=true,this},e.prototype.toString=function(){return mr(this.__wrapped__)},e.prototype.value=Rt,e.prototype.valueOf=Rt,lt(["join","pop","shift"],function(n){var t=br[n];e.prototype[n]=function(){var n=this.__chain__,r=t.apply(this.__wrapped__,arguments);
 return n?new o(r,n):r}}),lt(["push","reverse","sort","unshift"],function(n){var t=br[n];e.prototype[n]=function(){return t.apply(this.__wrapped__,arguments),this}}),lt(["concat","splice"],function(n){var t=br[n];e.prototype[n]=function(){return new o(t.apply(this.__wrapped__,arguments),this.__chain__)}}),ne.spliceObjects||lt(["pop","shift","splice"],function(n){var t=br[n],r="splice"==n;e.prototype[n]=function(){var n=this.__chain__,e=this.__wrapped__,u=t.apply(e,arguments);return 0===e.length&&delete e[0],n||r?new o(u,n):u
-}}),e}var C,k=[],O=[],E=0,S=+new Date+"",A=75,I=40,N=" \t\x0B\f\xa0\ufeff\n\r\u2028\u2029\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000",R=/\b__p\+='';/g,T=/\b(__p\+=)''\+/g,P=/(__e\(.*?\)|\b__t\))\+'';/g,D=/&(?:amp|lt|gt|quot|#39);/g,q=/[&<>"']/g,F=/<%-([\s\S]+?)%>/g,$=/<%([\s\S]+?)%>/g,L=/<%=([\s\S]+?)%>/g,B=/\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g,W=/\w*$/,z=/^\s*function[ \n\r\t]+\w/,K=/^0[xX]/,M=/($^)/,U=/\bthis\b/,V=/['\n\r\t\u2028\u2029\\]/g,X="Array Boolean Date Error Function Math Number Object RegExp String _ clearTimeout document isFinite isNaN parseInt setTimeout TypeError window WinRTError".split(" "),G="constructor hasOwnProperty isPrototypeOf propertyIsEnumerable toLocaleString toString valueOf".split(" "),H="[object Arguments]",J="[object Array]",Q="[object Boolean]",Y="[object Date]",Z="[object Error]",nt="[object Function]",tt="[object Number]",rt="[object Object]",et="[object RegExp]",ut="[object String]",ot={};
+}}),e}var C,k=[],O=[],E=0,S="__1335248838000__",A=75,I=40,N=" \t\x0B\f\xa0\ufeff\n\r\u2028\u2029\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000",R=/\b__p\+='';/g,T=/\b(__p\+=)''\+/g,P=/(__e\(.*?\)|\b__t\))\+'';/g,D=/&(?:amp|lt|gt|quot|#39);/g,q=/[&<>"']/g,F=/<%-([\s\S]+?)%>/g,$=/<%([\s\S]+?)%>/g,L=/<%=([\s\S]+?)%>/g,B=/\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g,W=/\w*$/,z=/^\s*function[ \n\r\t]+\w/,K=/^0[xX]/,M=/($^)/,U=/\bthis\b/,V=/['\n\r\t\u2028\u2029\\]/g,X="Array Boolean Date Error Function Math Number Object RegExp String _ clearTimeout document isFinite isNaN parseInt setTimeout TypeError window WinRTError".split(" "),G="constructor hasOwnProperty isPrototypeOf propertyIsEnumerable toLocaleString toString valueOf".split(" "),H="[object Arguments]",J="[object Array]",Q="[object Boolean]",Y="[object Date]",Z="[object Error]",nt="[object Function]",tt="[object Number]",rt="[object Object]",et="[object RegExp]",ut="[object String]",ot={};
 ot[nt]=false,ot[H]=ot[J]=ot[Q]=ot[Y]=ot[tt]=ot[rt]=ot[et]=ot[ut]=true;var at={leading:false,maxWait:0,trailing:false},it={configurable:false,enumerable:false,value:null,writable:false},lt={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;"},ft={"&amp;":"&","&lt;":"<","&gt;":">","&quot;":'"',"&#39;":"'"},ct={"boolean":false,"function":true,object:true,number:false,string:false,undefined:false},pt={"\\":"\\","'":"'","\n":"n","\r":"r","\t":"t","\u2028":"u2028","\u2029":"u2029"},st=ct[typeof window]&&window||this,ht=ct[typeof exports]&&exports&&!exports.nodeType&&exports,gt=ct[typeof global]&&global;
 !gt||gt.global!==gt&&gt.window!==gt||(st=gt);var vt=(gt=ct[typeof module]&&module&&!module.nodeType&&module)&&gt.exports===ht&&ht,yt=x();typeof define=="function"&&typeof define.amd=="object"&&define.amd?(st._=yt, define(function(){return yt})):ht&&gt?vt?(gt.exports=yt)._=yt:ht._=yt:st._=yt}).call(this);
\ No newline at end of file
diff --git a/dist/lodash.js b/dist/lodash.js
index 88881ea7c..f532ca2ac 100644
--- a/dist/lodash.js
+++ b/dist/lodash.js
@@ -20,7 +20,7 @@
   var idCounter = 0;
 
   /** Used to prefix keys to avoid issues with `__proto__` and properties on `Object.prototype` */
-  var keyPrefix = +new Date + '';
+  var keyPrefix = '__1335248838000__';
 
   /** Used as the size when optimizations are enabled for large arrays */
   var largeArraySize = 75;
diff --git a/dist/lodash.min.js b/dist/lodash.min.js
index 2237bf36a..55b741710 100644
--- a/dist/lodash.min.js
+++ b/dist/lodash.min.js
@@ -53,6 +53,6 @@ l in n&&(u[l]=n[l])}else t=i.createCallback(t,r,3),e(n,function(n,r,e){t(n,r,e)&
 }),l+="';",f=r=r.variable,f||(r="obj",l="with("+r+"){"+l+"}"),l=(u?l.replace(I,""):l).replace(S,"$1").replace(T,"$1;"),l="function("+r+"){"+(f?"":r+"||("+r+"={});")+"var __t,__p='',__e=_.escape"+(u?",__j=Array.prototype.join;function print(){__p+=__j.call(arguments,'')}":";")+l+"return __p}";try{var c=lr(e,"return "+l).apply(k,o)}catch(s){throw s.source=l,s}return t?c(t):(c.source=l,c)},i.trim=ue,i.trimLeft=oe,i.trimRight=ie,i.unescape=function(n){return null==n?"":(n=vr(n),0>n.indexOf(";")?n:n.replace(D,w))
 },i.uniqueId=function(n){var t=++O;return vr(null==n?"":n)+t},i.all=It,i.any=Lt,i.detect=Tt,i.findWhere=Tt,i.foldl=qt,i.foldr=Wt,i.include=Rt,i.inject=qt,er(function(){var n={};return Vt(i,function(t,r){i.prototype[r]||(n[r]=t)}),n}(),false),i.first=wt,i.last=function(n,t,r){var e=0,u=n?n.length:0;if(typeof t!="number"&&null!=t){var o=u;for(t=i.createCallback(t,r,3);o--&&t(n[o],o,n);)e++}else if(e=t,null==e||r)return n?n[u-1]:k;return e=u-e,xt(n,0<e?e:0)},i.sample=function(n,t,r){return n&&typeof n.length!="number"&&(n=nr(n)),null==t||r?n?n[st(0,n.length-1)]:k:(n=zt(n),n.length=Lr(zr(0,t),n.length),n)
 },i.take=wt,i.head=wt,Vt(i,function(n,t){var r="sample"!==t;i.prototype[t]||(i.prototype[t]=function(t,e){var u=this.__chain__,o=n(this.__wrapped__,t,e);return u||null!=t&&(!e||r&&typeof t=="function")?new d(o,u):o})}),i.VERSION="2.4.1",i.prototype.chain=function(){return this.__chain__=true,this},i.prototype.toString=function(){return vr(this.__wrapped__)},i.prototype.value=Nt,i.prototype.valueOf=Nt,Dt(["join","pop","shift"],function(n){var t=yr[n];i.prototype[n]=function(){var n=this.__chain__,r=t.apply(this.__wrapped__,arguments);
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+return n?new d(r,n):r}}),Dt(["push","reverse","sort","unshift"],function(n){var t=yr[n];i.prototype[n]=function(){return t.apply(this.__wrapped__,arguments),this}}),Dt(["concat","splice"],function(n){var t=yr[n];i.prototype[n]=function(){return new d(t.apply(this.__wrapped__,arguments),this.__chain__)}}),i}var k,x=[],C=[],O=0,A="__1335248838000__",E=75,N=40,R=" \t\x0B\f\xa0\ufeff\n\r\u2028\u2029\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000",I=/\b__p\+='';/g,S=/\b(__p\+=)''\+/g,T=/(__e\(.*?\)|\b__t\))\+'';/g,D=/&(?:amp|lt|gt|quot|#39);/g,F=/[&<>"']/g,$=/<%-([\s\S]+?)%>/g,B=/<%([\s\S]+?)%>/g,q=/<%=([\s\S]+?)%>/g,W=/\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g,z=/\w*$/,L=/^\s*function[ \n\r\t]+\w/,P=/^0[xX]/,K=/($^)/,M=/\bthis\b/,U=/['\n\r\t\u2028\u2029\\]/g,V="Array Boolean Date Function Math Number Object RegExp String _ clearTimeout document isFinite isNaN parseInt setTimeout TypeError window WinRTError".split(" "),X="[object Arguments]",G="[object Array]",H="[object Boolean]",J="[object Date]",Q="[object Function]",Y="[object Number]",Z="[object Object]",nt="[object RegExp]",tt="[object String]",rt={};
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\ No newline at end of file
diff --git a/dist/lodash.underscore.js b/dist/lodash.underscore.js
index 8b6227470..a1fd19e5b 100644
--- a/dist/lodash.underscore.js
+++ b/dist/lodash.underscore.js
@@ -19,7 +19,7 @@
   var indicatorObject = {};
 
   /** Used to prefix keys to avoid issues with `__proto__` and properties on `Object.prototype` */
-  var keyPrefix = +new Date + '';
+  var keyPrefix = '__1335248838000__';
 
   /** Used to match HTML entities and HTML characters */
   var reEscapedHtml = /&(?:amp|lt|gt|quot|#x27);/g,
diff --git a/dist/lodash.underscore.min.js b/dist/lodash.underscore.min.js
index b5aee30ae..7197514b5 100644
--- a/dist/lodash.underscore.min.js
+++ b/dist/lodash.underscore.min.js
@@ -3,37 +3,37 @@
  * Lo-Dash 2.4.1 (Custom Build) lodash.com/license | Underscore.js 1.5.2 underscorejs.org/LICENSE
  * Build: `lodash underscore exports="amd,commonjs,global,node" -o ./dist/lodash.underscore.js`
  */
-;(function(){function n(n,r,t){t=(t||0)-1;for(var e=n?n.length:0;++t<e;)if(n[t]===r)return t;return-1}function r(n,r){var t;n:{t=n.i;var e=r.i;if(t!==e){if(t>e||typeof t=="undefined"){t=1;break n}if(t<e||typeof e=="undefined"){t=-1;break n}}t=0}return t||n.j-r.j}function t(n){return _r[n]}function e(n){return"\\"+wr[n]}function u(n){return dr[n]}function o(n){return n instanceof o?n:new i(n)}function i(n,r){this.__chain__=!!r,this.__wrapped__=n}function f(n){function r(){if(e){var n=x(e);Dr.apply(n,arguments)
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diff --git a/lodash.js b/lodash.js
index aa0923725..5180240c5 100644
--- a/lodash.js
+++ b/lodash.js
@@ -22,7 +22,7 @@
   var indicatorObject = {};
 
   /** Used to prefix keys to avoid issues with `__proto__` and properties on `Object.prototype` */
-  var keyPrefix = +new Date + '';
+  var keyPrefix = '__1335248838000__';
 
   /** Used as the size when optimizations are enabled for large arrays */
   var largeArraySize = 75;