on debian and redhat

#-------- debian unstable produces 32

$ perl perlbug.pl 
32

$ uname -a
Linux chill 2.6.10 #1 Wed Jan 19 13:46:26 EST 2005 i686 GNU/Linux

$ perl -v
This is perl, v5.8.4 built for i386-linux-thread-multi

#----------- rh 7.2 produces 2

$ perl perlbug.pl 
2

$ uname -a
Linux cozy166 2.4.7-10 #1 Thu Sep 6 17:21:28 EDT 2001 i586 unknown

$ perl -v
This is perl, v5.8.6 built for i586-linux

#---------- on another rh 9 produces 0

$ perl perlbug.pl 
0

$ uname -a
Linux dev 2.4.20-30.9smp #1 SMP Wed Feb 4 20:36:46 EST 2004 i686 i686 i386 GNU/Linux

$ perl -v
This is perl, v5.8.0 built for i386-linux-thread-multi
(with 1 registered patch, see perl -V for more detail)