diff -r 05224402145d -r 4252bfc396fc emul/mini/src/main/java/java/lang/Long.java
--- a/emul/mini/src/main/java/java/lang/Long.java	Wed Jan 23 20:39:23 2013 +0100
+++ b/emul/mini/src/main/java/java/lang/Long.java	Tue Feb 26 14:55:55 2013 +0100
@@ -262,7 +262,7 @@
      * @param   i   a {@code long} to be converted.
      * @return  a string representation of the argument in base 10.
      */
-    @JavaScriptBody(args = "i", body = "return i.toString();")
+    @JavaScriptBody(args = "i", body = "return i.toExactString();")
     public static String toString(long i) {
         if (i == Long.MIN_VALUE)
             return "-9223372036854775808";