This means that too many connections are being made from your host. If you're on a network (i.e. at school, college or work) then this could be because too many people on your network are connecting to the network at the same time. You can check your hostname for a G-Line on GameSurge
here.
If you have an account with GameSurge you can also request a connection limit increase (a "trust"), the form is
here.
A G-Line is a "global ban" from a network (so you cannot connect) and I'm afraid nobody on this board can remove it. Even if IRC Operators of networks help on these boards there are forms you need to fill in and emails you need to send for most networks to have the ban removed. You might like to see
this thread.
G'luck getting back online
Regards,