is it std.datetime bug?

[drug via Digitalmars-d-learn]

import std.datetime;
import std.stdio;

void main()
{
        long.max.SysTime.toISOExtString.writeln;
}

dmd 2.065 (dpaste.dzfl.pl):
+29228-09-14T02:48:05.4775807

dmd v2.067-devel-c6b489b (using Digger):
-29227-04-20T00:11:54.5224191

could somebody confirm it?