I have a HTC Inspire 4G (Running Gingerbread) and it used to work perfectly last few weeks, now I can't do anything Google related without the log-in error. When I saw it I thought 'Oh god, I have been hacked!', so I changed my password, security questions, ect, still didn't work, made me facepalm. I'm sure I was not the only one who thought that they were hacked too.
Anyway, it's annoying, I can access my emails to some degree, but Docs/Drive, whatnot is a bust.
I wonder how'll they'll fix it considering most of us can't log in to get the update through the store... I hope they don't have the update sent through the carriers/manufacturer of phone you are using, I fear it'd take too long.