Been getting these, and folks have not been able to login.

How can I stop this? am just using a fraction of the server power.

Quote
Tue, Mar 26 2013 00:40:42 -0400
66.249.75.152 Script: - Line: Unable to connect to the database! - Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
Tue, Mar 26 2013 00:40:42 -0400
173.199.117.235 Script: - Line: Unable to connect to the database! - Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)