Having a bit of trouble logging into the server. Any idea why?

Here are the details:
- Can connect to the server
- Login script takes a bit to respond
- If I try to log in, it will wait for a bit, and either log me in successfully, disconnect me forcibly or time me out.
- If I spam the login command a few times (which I figured wouldn't be a problem to other users as normal chat wouldn't be spammed), it will sometimes successfully log me in.

Hoping this gets resolved!