The server is currently being attacked by a "DDOS", so if you can't get on, or odd things happen, you will know why.
Not much I can do, as these attacks are anonymous.
Have not had any problems yet...
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
A number by itself is useful, but it is far more useful to know how accurate or certain that number is.