Yes, very much so.. Treyarchs servers are crap.. Hopefully as time goes on they take more measures to clean/speed it up but not anytime soon they are still more worried about sales then the actual gameply at present. .
No
the problem is your internet connection try to check that out
it means the server has gone down such as minecraft server has crashed or the server owner has lost Internet connection
It means that, as you are trying to connect to a server, the server is not responding, after a minuet or so it will show this message. This could mean the server is offline or that your connection to the internet is poor. (Or the server host's connection to the internet is poor.
Make sure your router and modem are set to always connected
Lag is what happens when your connection is low or the host's connection is low. You're basically behind everyone else and skip around the map or just freeze and eventually you will either be timed out of the server or the server itself will crash.
It means the server is iether down,reloading or the server creator hasn't port forwarded the server It means that the set timeout time in the java code of minecraft is less time than it took to connect to the server meaning the connection has 'timed out' this is because the server has been unresponsive for more then said amount of time.
Try relogging.
if it says its timed out you have the wrong password. you can figure out the password or remove using your computer
The game could be laggy because of your internet connection, a problem with Live or PSN or whatever you use. It would probably be to do with your internet speed/connection if it hasn't stopped taking so long.
you either have mods(unlikely) or just have bad connection and you lag
it happened that same for me
Usually from my experience it happens when I start to do really well in a video game. For example, it happens to me alot when i play COD MW3 and Im doing really well at sniping it either says lost connection to host or server error or timed out. I assume it has something to do with the host connection or in some very rare cases a "DDOS" which is something that people can do to kick you offline. Yes, that means they are a hacker.