This message appears on my computer while I'm trying to start a Live chess session.

502 Bad Gateway

Wait for someone to fix it, I guess.

Same for me - it disconnected me and now says that

have you guys all downloaded firefox 3 and installed it??

use that to access livechess or chess.com.

if so, nothing else I can suggest.

Erik knows about the problem and is working on it right now.

livechess is back alive again,  5 32 pm   eastern standard time zone, USA.

Thanks, now it's working good.

I don't see the piece on board (error in majoryty of page) , What is the problem ,i have installed virtual machine the Sun,  (error in pages with IE and firefox) .

error in javascript ? , what is the solution  to fix this error ?

Have you tried deleting all of your cache? If you are unsure how to do this, here is a tutorial: http://support.chess.com/index.php?_m=troubleshooter&_a=steps&troubleshootercatid=1&parentid=0 . 

yep. he is wright. Call someone!