Are you using mIRC? Or a program similar to that?
For mIRC at least, when you start it up, it has a bunch of messages at the start, including a warning this:
[11:06] -ProxyServ- [Attention] We are scanning you for open proxies. If you see any firewall probes, this is NOT harmful and is only used to block unwanted abusive proxy relays. For more information, visit:
http://wikkedwire.com/proxy.html
Its just a warning that they are scanning. It doesn't affect if you can get into the chat room or not. So I reckon there's something else the problem
