I got burnt by an unfortunate combination of ActivePerl registering script execution as the default handler for .pl files, and some random file transfer applica

I got burnt by an unfortunate combination of ActivePerl registering script execution as the default handler for .pl files, and some random file transfer application's "view file" dispatching to the Windows default file handler once. Wanted to view the source of a remote perl script; it ended up downloading and immediately executing the script locally with no warning. Boom!