I an getting a DNS message from the Server had it yesterday, same today, chess tactics is constantly hanging usually when you have solved the puzzle.

Needs sorting

It says server unavailable and gives an error message number, working just now, but still doing it intermittently.

It is saying

The server is unable to deal with your request at present DNS failure

I must have had 50 problems today on tactics trainer were it has hung after the correct move, never on the wrong one how aggravating is that ??

we are having a DNS problem right now - the DNS servers at our host is mucked up. please let us know if it continues for more than 24 hours!

I cant get 10 consecutive minutes of service now.

How about you know we are sorry, working on it, inconveniece stuff like that, maybe even an automated Email

Customer Service heard of it ?

is that a movie title? no, i'm not familiar with it...

seriously though, it's an intermittent problem affecting a small % of users. we have already fixed it, it just takes the internet some time to propagate all of the fixes. 

very sorry!

one thing you can try is doing a full reboot/re-cycle on your router.

See that wasnt hard was it ?

I will try that

Still having problems with this whole day on and off... :(

Right now DNS error :(

Service Unavailable - DNS failure

The server is temporarily unable to service your request. Please try again later.

Reference #11.87407b5c.1283032125.18d4ba8c

Unfortunately, with the way that DNS works, there's not much more than can be done. You will, sadly, just have to wait. Once it's fixed on chess.com's end (which Erik said that it is), it takes some time for the fixes to make their way through the internet, and there really isn't any way to speed this process up. 

if you are having problems and want some help with it, visit www.zerolag.com and click on their LIVE SUPPORT and they may be able to help you!

I'm having the same problem.  

Pardon me for asking, but Zerolag.com appears to be a hosting site...Other than signing me up for a new ISP service, how are they going to assist with this issue?   I am not having this error on any other site using my current ISP.   Just chess.com   

I'm certainly willing to wait a few days for DNS changes to propogate, but don't think zerolag.com is an option for me.

In reference to which post?  There was nothing rude about my post.  I even said Pardon before the question?  lol   Jeez!

Back to the issue...... I seem to have found a solution on my own.  My ISP service once listed a preferred DNS I could enter manually on my network settings.  That had been cleared at one point for some reason or other.  I manually entered that IP back into my TCP/IP "preferred DNS settings and so far I've not seen any more annoying DNS errors.

Maybe others can contact their own ISP's and ask if they recommend a preferred DNS that can be entered manually?

I have got this problem again today.

This is the 5th day running I have had this.

I have rebooted the router 4 times.

This may be of absolutely no concern to you but it is seriously screwing up my pre season preparation.

When will this be sorted, no other site gives me anything like this much grief, I like Chess.COm but there are limits.

 It was a flop at the box office.

Same here:

Service Unavailable - DNS failure

The server is temporarily unable to service your request. Please try again later.

Reference #11.87407b5c.1283090977.1ad47384

and [refresh] the page will only lead to another Reference #

Reference #11.87407b5c.1283091027.1ad4739b

Reference #11.87407b5c.1283091069.1ad61d8c