Re: co.cc
Co.cc has blocked x10Hosting's name servers -- you can't use a co.cc subdomain with an x10Hosting account at the moment. There's nothing x10Hosting can do at their end (other than trying to come to an agreement with co.cc, which they're working on), and nothing you can do at your end other than to change your domain.
“Beware of bugs in the above code; I have only proved it correct, not tried it.” --Donald Knuth
"It was as if its architects were given a perfectly good hammer and gleefully replied, 'neat! With this hammer, we can build a tool that can pound in nails.'" -- Alex Papadimoulis (on TheDailyWTF.com)