DateTime 0.76 test fails on 30future-tz.t

Hi all,

I'm trying to build DateTime 0.76 on one of our machines , and the test suite fails on test #30, future-tz:

t/30future-tz.t .................. Use of uninitialized value in numeric ge (>=) at /root/DateTime-0.76/blib/lib/DateTime.pm line 137.
t/30future-tz.t .................. 1/?
#   Failed test 'Make sure we can add 50 years worth of years in America/New_York time zone'
#   at t/30future-tz.t line 45.
Use of uninitialized value in numeric ge (>=) at /root/DateTime-0.76/blib/lib/DateTime.pm line 137.

#   Failed test 'Make sure we can add 50 years worth of days in America/Chicago time zone'
#   at t/30future-tz.t line 45.
Use of uninitialized value in numeric ge (>=) at /root/DateTime-0.76/blib/lib/DateTime.pm line 137.

#   Failed test 'Make sure we can add 50 years worth of minutes in America/Denver time zone'
#   at t/30future-tz.t line 45.
Use of uninitialized value in numeric ge (>=) at /root/DateTime-0.76/blib/lib/DateTime.pm line 137.

#   Failed test 'Make sure we can add 50 years worth of seconds in America/Los_Angeles time zone'
#   at t/30future-tz.t line 45.
Use of uninitialized value in numeric ge (>=) at /root/DateTime-0.76/blib/lib/DateTime.pm line 137.
t/30future-tz.t .................. 5/?
#   Failed test 'Make sure we can add 50 years worth of nanoseconds in America/North_Dakota/Center time zone'
#   at t/30future-tz.t line 45.
t/30future-tz.t .................. 7/? # Looks like you failed 5 tests of 10.
t/30future-tz.t .................. Dubious, test returned 5 (wstat 1280, 0x500)
Failed 5/10 subtests

Any ideas why this might be happening? Is it something I can safely skip?

System info follows:
Perl 5.8.8
Linux xxx 2.6.22.14-72.fc6 #1 SMP Wed Nov 21 13:44:07 EST 2007 i686 i686 i386 GNU/Linux

Thanks!

Peter