This is what I got (with NT/5.8.0):
# original version:
H:\temp>perl x.pl
1.2
# with the new library:
H:\temp>perl -Ilib x.pl
1.49
# I modified the program to accept a parameter
# and tried again
H:\temp>perl -Ilib x.pl 10
1.49 - 10 times
# this only happened once!
H:\temp>perl x.pl 10
1.2 - 10 times
1118932187.88553
1118932187.94562
1118932188.0057
1118932188.06579
1118932188.13589
H:\temp>perl -Ilib x.pl 10
1.49 - 10 times
# then tried again a few times
H:\temp>perl x.pl 10 & perl -Ilib x.pl 10
1.2 - 10 times
1.49 - 10 times
With "100", sometimes I get output in
version 1.2, sometimes not; there is no output
in version 1.49
With "1000", I got output in both versions.