Hi Scott
Hard to believe I know, but Google has decided that HTTP is bad and HTTPS should be used by everybody, saving us all from a certain terrible end, again. Thanks Google.
All sites using HTTP will get some sort of warning appear, it may have already started, letting you know that the site is "not secure" . It's appeared in Firefox I've just noticed.
Without getting into SSL, TLS and all the rest of it, and depending on your browser, there are a few things you can try.
First, adjust your system time to that of the site you are trying to log into. For WGT it's PDT I think (pacific daylight time) that has been known to work.
Make sure in your internet options (IE) that SSL 2.0 and SSL 3.0 are both ticked and clear the SSL state (under certificates).
Maybe that'll help. (not that HTTPS is anymore secure than HTTP, as I'm sure you know)
Cheers!
Rich