America/Sao_Paolo timezone dying for 2008-10-19

We recently ran into a problem with DateTime::TimeZone dying on
2008-10-12 in the America/Sao_Paolo timezone:

perl  -Ilib -MDateTime -MDateTime::TimeZone -e 'DateTime->new(time_zone
=> "America/Sao_Paulo", year  => 2008, month => 10, day => 12)'
Invalid local time for date in time zone: America/Sao_Paulo

Upgrading to the very latest version of DateTime::TimeZone (released
yesterday) shows that the 12th now works, but the library fails on 19th
of October:

Any idea what might be going on?  Suggested fixes or workarounds?

$ perl -Ilib -MDateTime -MDateTime::TimeZone -e '
print DateTime->VERSION," ",DateTime::TimeZone->VERSION, "\n";
  foreach $d (1..31) {
     print "$d\n"; DateTime->new(time_zone => "America/Sao_Paulo",
                       year  => 2008, month => 10,day   => $d)}'
0.4305 0.81
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Invalid local time for date in time zone: America/Sao_Paulo

-- 
Happy Trails . . .

Kevin M. Goess
(and Anne and Frank)
904 Carmel Ave.
Albany, CA  94706
(510) 525-5217