skeletonbow: Just as a data point, I had to reset my password to log in also. Prior to that my browser auto-logged in for me, however neither the password stored in my browser that I extracted manually from the password manager, nor the identical password stored in my external manager (PasswordSafe) would log into the site. Oddly, others have reported that they were still able to log in without resetting their passwords.
While it's odd, it seems that everyone who is able to go through the password reset process which only takes a minute or so is able to successfully log in.
Also, if you use any kind of cookie-blocking or cookie management plugins, you may need to update their configuration to allow all of GOG's cookies through across their various subdomains etc. I had to do that to be able to properly log in and stay logged in while navigating around the site. This latter problem is a more obscure issue likely to only affect power users who care about such finicky details mind you. :)
Hope this helps.
Cool, well as soon as this hotmail issue gets fixed I should be able to access my account again =/