The navigation to previous versions of BioConductor is currently broken. For example on the page:
no packages load. I was only able to download the particular package I wanted via some URL reverse engineering. This is made more complex since directory listing is disabled. This has the side effect of hiding all these packages from Google, as well.
I was eventually able to get to this URL:
but searching the web for just "DNAcopy_1.40.0.tar.gz" will not let me find this package.