org mode message: "Specified time is not representable"

Hello,
Am using Emacs under Windows XP (see below) and org mode version 6.05b.

I get the message in the subject when I click on a time stamp which seems perfectly OK. As a test I took the
following .org file

** TODO <1973-07-28 Sat +1y> 1
** TODO <1908-07-06 Mon +1y> 2 *
** TODO <1912-04-26 Fri +1y> 3  *
** TODO <1943-01-16 Sat +1y> 4  *
** TODO <1979-04-11 Wed +1y> 5
** TODO <1970-06-11 Thu +1y> 6
** TODO <1976-08-07 Sat +1y> 7
** TODO <1941-06-19 Thu +1y> 8 *
** TODO <1920-08-20 Fri +1y> 9  *
** TODO <1994-08-24 Wed +1y> 10
** TODO <2005-09-03 Sat +1y> 11
** TODO <1965-11-10 Wed +1y> 12  *
** TODO <1987-11-21 Sat +1y> 13
** TODO <2007-06-15 Fri +1y> 14
** TODO <2001-05-19 Sat +1y> 15

a right mouse click on a day stamp should produce a "day agenda".
However, all timestamps on lines ending with an asterisk produce
the stated message. The Linux version of Emacs does not exhibit 
this behavior.

Any advice would be appreciated.

Regards,