in reply to Unpredictable output from Text::ExtractWords
I've run your code on the cygwin Perl v5.8.7 built for cygwin-thread-multi-64int on Windows XP Pro with similar results. I've also tried fiddling with the config parameters, all to no avail.
Looking at the documentation I get suspicious since basically there's practically none. The code is implemented in C and frankly, I don't feel like going through it now.
Hope this helps, -gjb-