Today I wanted to change some DNS settings for one of my domains and I got this error:
The Total DNS Control Manager for this domain is temporarily unavailable. Please try back later.
I called them, they said nothing is wrong, and to clear cookies..blabla. So it seems like a browser problem, I was using firefox, I tried with Opera, I got some error clearily saying they dont support opera. Then I used the Firefox from another computer and it worked...very weird.