The 32-bit Win 7 Trial can be downloaded but 64-bit cannot. Anyone see that same issue?

Regarding your update: The error you're seeing on Firefox simply indicates that the domain name on the SSL certificate doesn't match the domain name on the site. Since you're not giving them any information (e.g. submitting a form), you can probably just ignore the error. There should be an "Add exception" button or something like that when you see the warning in Firefox, that you can click on to proceed. (You can search the web for detailed instructions on adding a certificate security exception in Firefox 3)

"Have a look at
http://social.technet.microsoft.com/Forums/en-US/w7itprogeneral/thread/c7e63159-3c4d-48fb-afd9-c5891b101e99

We haven't got anywhere with Microsoft correcting their error yet, but this is the most likely place to see if it has been fixed!"