Are co.cc domains bad for adsense?

[Solidsnake]

I am asking because I am experiencing problem here...

To minimize the cost, I registered 10 co.cc domains and hosted all in the same server under xhosting (free server)... The first 2 blogs not showing ads...

I added 2 subdomains under xhosting "subdomain.pcriot.com" and copied the contents from co.cc blogs and posted it in those 2 new blogs with pcriot subdomains... Ads are showing without any problem..

Same server, same ad codes, same content.. The difference are just the domains..

What do you think? Itr's been more than 24 hours and still showing public ads...