That's not encouraging...

You can sing up from smartphone? Which OS.

What OS and Browser? I'm cannot log from the smarphone with this new login screen (WP8 & IE)

Ditto, and like others here I had to reload several times (opening a separate tab for My Account worked finally) to be able to login again.

While I do prefer the "look" of the new login screen, having an existing system replaced with a not-quite-ready-for-prime-time one gives me the jeebies. Especially when its failure affects my ability to access 500+ previously purchased games.

Same here :/

GOG's conducting a secret experiment and only some very lucky and special members are chosen to participate. ;-P

See here.

Thanks for the link

I feel left out :(

Well, in fact the chosen where encouraged to send me some cookies. Chocolate would be ok. :P

This is weird. I logged in the first time but I can't check my account or logout. It keeps sending me back to the frontpage/login page, which I can't see now. That's with Chrome.

Samsung Galaxy with Android, but it's a burden to check something with the "tool bar" which fly everywhere on the screen :P

Here, share some magic chocolate. ;-P

As I posted in the other thread. I had issues (spinning disc) with the login screen popping up because my company's proxy. Logged in with my smartphone and no issues whatsoever. So, if anyone is in the same situation, I'd advise to wait until you're home or tether to your phone.

I had the spinning disc for a long time. Cleared cache, cookies, tried IE 11, tried another computer, updated to Firefox 30.0... nothing.

I think the problem was a server issue because it's trying to load the login screen from http://login.gog.com/

Currently, that page yields this.
When I was able to log in again, the page displayed the login box instead of the GOG bears.

EDIT:
Tested theory with IE11 and the spinning disc is back.