Sudden sql error mesage

Hey all,

I have installed and had running for the past 10 days or so a new installation of piwik to cover some sites I am building.
It has been runnig fine for the time it has been installed and has been collecting stats beautifully.
I went to login today and got this error message:

"SQLSTATE[HY000] [2002] Can’t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock’ (11) "

Just wondered if anyone had any idea of what may have caused this suddenly. I have done nothing to the installation or the database.
It was working yesterday, then suddenly this today. Weird. Any ideas or help would be much appreciated.

B.

It looks like your mysql server is down. If you are on shared hosting, contact your web host. If you are on dedicated server, you can restart mysql.