We check this website, now cmosforum.ru is up and dont blocked for our system and other users of the Internet.
So, answer to question: Is cmosforum Down Right Now? - NO! cmosforum is up!
If you have problem with access to site cmosforum, and domain cmosforum.ru is not avalible.
Clear browser cache and/or try other web browser
(Chrome, Firefox or Safari).