Oh, I'm sure you could. But I don't have any failed attempts handy. Between some minor improvements to Perl, some better tools I've written, some minor improvements to my own skills, and surely a bit about the types of problems that I've taken on of late, I just don't find myself even tempted to reach for threads when writing Perl recently.

I'm actually extremely close to releasing a batch of these tools that should also work on Windows (almost as well as they do on Linux), in part based on work from you. So you've already helped me. :)