Are you sure you have the port number right? Furtopia's IRC uses a non
stanard port number of 6007, and you will need to tell whatever client you're using to use that port number.
If you're using the web client
, it's set up to do this already; for any other client, you'll need to manually supply the port number, either through a specific field or (if there isn't one) specifying "irc.furtopia.org:6007" (without quotes) as the hostname to connect to.
If it's not that, is there any other information that you're able to give on the issue? Is there anything that tends to happen before/after the issue, or is there anything you tend to do shortly before it happens?