Whenever I go on a server, and it gets laggy, I usually leave to go onto another server. Sometimes, when I go to my SERVER LIST, it has completely disapeared!!!!

I expected to have my server list. It has happened to me several times and i now have a word document with the ips.
What actually happened was...:
Describe what happened here

1. Get a list of servers
2. Get a crappy internet connection.
3. Go on a server (mine was just now, play.mczone.co (nebula))
4. Leave when it lags.
5. look at your server list.

• • • doesn't always happen***