I had the same problem and took me three days to find out why. Seems that they changed me to another server/dns. Check to see if your data has been moved to another server.
From Hostony to me:
"As for the moment we got a nice deal from Atlanta Internap datacenter
and started to deploy our new servers there. Our current new platforms
are Dual Xeon 2.4 and Quad Xeon 2.0 Ghz.
We've just moved al accaunts on our server from 209.152.172.192 to 67.15.42.48
Lately the server was very unstable and there is unacceptable to
continue use this server for shared hosting. It is not a software - it's a
hardware issue. So that there are no possibilities to fix it.
Process was smoothy and you should experience no downtime. We
copied all your files and databases to a new server. If you use ip to access
to your account you should change it to 67.15.42.48. Servers will both work
some time to prevent data loss.
Dual Xeon 2.4 ghz
1024 Mb DDR Ram
2 x 78 Gb HDD SCSI
Ip address of new server is: 67.15.42.48
You can log into WHM on the new server via
http://67.15.42.48:2086/and to cpanel via
http://67.15.42.48:2082.
Also if you want to have secure connection use:
https://67.15.42.48:2087/ for WHM
and
https://67.15.42.48:2083/ for Cpanel.
You can log in any domain control panel with old username and
password. They did not change during the transfer. Also all your mail,
ftp accounts and databases are stored.
You have to point your site to a new server if you have your own DNSs. You
should change ip from
old to a 67.15.42.48. If can't do it manually, we'll help to do it.
Notify us about that and we'll synchronize your data. To prevent any
misunderstandings please inform us by ICQ (122590581) or AIM (Need4Support).
Both servers will live together during a week. And after that an old
server'll stop working."