all of those gave you that error? damn...sorry I don't know how to help with that. :/

NOT a single one on EFnet... (this same problem is occuring for quakenet,rizon,ogamenet,etc..) So...why didn't you say what IRC client you're using? :P It isn't EFNet's fault since it happens to all servers, so it's your client's fault, so if you want help someone somewhere, will eventually need to...