I can't login to Creative Cloud on desktop Windows 7 x64 with my email. It's saying 'you have successfully logged out' instead 'you have successfully logged in'. I use Russian OS so actualiy I translated message from Russian.
Otherwise I can without any problems login to https://creative.adobe.com/ web page.
P.S. I'm prerelease member of some projects. During last 10 days CC was autoupdated and I think that update broke login system...
http://helpx.adobe.com/x-productkb/policy-pricing/activation-network-issues.html this don't resolve issue.