The question basically explains the problem.
I\'m using Windows XP Pro Service Pack 3
ComSpec=C:\\WINDOWS\\system32\\cmd.exe
I launched the console via Star
The cause of this is when cmd.exe for windows xp internally call to the function MultiByteToWideChar using the argument dwFlags with the value 1. The documentation says this: "For UTF-8 dwFlags must be set to 0. Otherwise, the function fails".
A patch for it here: http://consolesoft.com/p/cmd-xp-65001-fix/index.html