Got an email indicating Windowblinds 8 Beta was available, so I downloaded it and tried to install it.
It opened a box asking me for my email address and password -- which I provided, but then I got an error message saying it couldn't connect to the Internet!
The task bar clearly showed the icon for network connection, so I opened IE 10 -- and confirmed I could connect to this site.
I was able to work around this by providing the serial number (which I got from my profile on this site!) ...
But thought you needed to know this is a problem -- in case others mention the same thing.