How to disconnect a broadband connection?

[Gabriel <rossetti gabriel gmail com>]

Hi all,

I connect my laptop to the internet at times using a broadband 
connection. I can't figure out how to disconnect the connection using 
the connection menu, I was expecting a "disconnect" option but didn't 
find it. I also noticed that I con't disconnect from any other type of 
connection, I have to turn it off apparently (which doesn't work for 
broadband by the way). I think there should be a way to disconnect 
without having to switch it off, did I miss something??

Thanks,
Gabriel