TidyHosts constantly monitors the performance of its FTP servers. When system problems do occur look for an alert on the status page of this site.
If there are no alerts posted then the problem is probably with your FTP client or computer.
Here are some common problems/issues:
Check the FTP settings in your client. You may need to have PASV enabled.
If you use a firewall please check you have the correct ports open allowing outbound traffic on ports 20,21.
Do you have a personal firewall product installed on your computer? This may be Zone Alarm, Norton Personal Firewall, or the built in firewall installed with XP. If so then you need to set it up correctly. Try disabling it to see if it is causing the problem.
Are you trying to connect to the right server? You should br using ftp.yourdomainname. You can also use ftp.tidyhosts.com.