Thanks for the answer!
There must also be a bug in listen. It should have returned with an indication of the error. It does not return and sometimes even puts the operating system in an in-stable state.
I have tried to install modules using Strawberry-Perl and CPAN in Windows 7. Have had problems with the test suites in HTTP-Server-Simple, Test-TCP and some other modules. Test-TCP is used in the test of many modules. It uses fork and kill on the forked processes and often the tests are blocked and the installation must be restated. Kill on forked processes in Windows is unsafe and unpredictable.
Why are there so many problems with the test suites using Windows? Are there too few, who installs modules in Windows using Strawberry-Perl and CPAN.