The site labs.hol.vmware.com is an HTTP (non-SSL) site. The credentials are encrypted, but use a different domain name behind the scenes for that purpose.
If you want to use SSL to access the site, you can, for now, use
otherwise, use the non-SSL site:
We are looking into a configuration that would allow SSL for the other domain name, but there is not much benefit to encrypting most of the free content we offer.