I don't know if I've ever used the "keep me logged in" option, but I had to check that option to get logged in just now.
Problems with logging in and playing live chess

I also could not log in. Had to select the keep me logged in button in order for the login to take.
The same for me as well and I haven't even tried live chess. I don't want to click the keep logged in button. Is this bug going to be corrected?

I have had identical difficulties to those with which the OP is confronted. It appears that changing browsers does not help.

I also could not log in. Had to select the keep me logged in button in order for the login to take.
Same thing happened to me; I was finally able to log in after about an hour of trying without checking the "keep me logged in" button.

For live chess, I got this:
The page isn't redirecting properly
Firefox has detected that the server is redirecting the request for this address in a way that will never complete.
* This problem can sometimes be caused by disabling or refusing to accept
cookies.
Sorry for all the extra space...

What error messages are you seeing ?
I would try to log in on the main page, and kept getting redirected to the log in page with the following message: "You must be logged in to do that," or something like that.

Hi,
Today was the first time I used the "keep me logged in" option. Afterwards, I logged out and I can't log in without that option checked. If I don't check the option, it keeps returning to the login page saying "you must login to do that". Also, I can't play live chess. It simply says "Firefox is detecting that this page is being redirected in a way that will never complete" or "This webpage has a series of looped redirects" (Chrome, not direct quote).Clearing cookies does not help.
I've tried this on both Chrome and Firefox.
i second this kingwangthegreat, i could not log on...i went to this forum and saw people saying to check the keep me signed in box and it worked...i never used this feature before, why must we all all of a sudden use this feature????

For chrome the error message on live chess is:
This webpage has a redirect loop.
The webpage at http://www.chess.com/login_and_go.html?returnUrl=http://live.chess.com/simple has resulted in too many redirects. Clearing your cookies for this site or allowing third-party cookies may fix the problem. If not, it is possibly a server configuration issue and not a problem with your computer.

I've been reading a chess book while waiting for live chess to get fixed but it doesn't look like I'll be getting on today. I'm hoping they get it fixed by tomorrow.
Hi,
Today was the first time I used the "keep me logged in" option. Afterwards, I logged out and I can't log in without that option checked. If I don't check the option, it keeps returning to the login page saying "you must login to do that". Also, I can't play live chess. It simply says "Firefox is detecting that this page is being redirected in a way that will never complete" or "This webpage has a series of looped redirects" (Chrome, not direct quote).Clearing cookies does not help.
I've tried this on both Chrome and Firefox.