Fix for issue 91 (http://code.google.com/p/v8/issues/detail?id=91)

src/date-delay.js

Index: src/date-delay.js
===================================================================
--- src/date-delay.js	(revision 1034)
+++ src/date-delay.js	(working copy)
@@ -957,7 +957,7 @@
   if ($isNaN(year)) return %_SetValueOf(this, $NaN);
   year = (0 <= TO_INTEGER(year) && TO_INTEGER(year) <= 99)
       ? 1900 + TO_INTEGER(year) : year;
-  var day = MakeDay(year, GetMonthFrom(this), GetDateFrom(this));
+  var day = MakeDay(year, MonthFromTime(t), DateFromTime(t));
   return %_SetValueOf(this, TimeClip(UTC(MakeDate(day, TimeWithinDay(t)))));
 }