Cannot connect to some servers
 

I can connect to most servers, but then I try to log into a few others and it doesn't work. It tries to connect to the server, but it just kicks me back to the login screen. Is this a problem on my end?

What servers are you having trouble with? If you can get into most of them you're probably ok. It's possible that you are trying to access a server that isn't quite ready for clients, or might be on a bad connection intended for just the server op to use. The nature of open source means that really anything can be going on on any server and you would have no idea what the exact cause is.