Erro na galeria brasil

Instalando a galeria brasil, apareceu o seguinte no passo 3.Ja revisei o arquivo conexao.php e nao encontrei erros.Warning: mysql_connect(): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) in /home/adbonsucesso/www/testesphp/galeriabrasil/include/conexao.php on line 1Warning: mysql_select_db(): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) in /home/adbonsucesso/www/testesphp/galeriabrasil/include/conexao.php on line 1Warning: mysql_select_db(): A link to the server could not be established in /home/adbonsucesso/www/testesphp/galeriabrasil/include/conexao.php on line 1Warning: mysql_query(): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) in /home/adbonsucesso/www/testesphp/galeriabrasil/instalar.php on line 318Warning: mysql_query(): A link to the server could not be established in /home/adbonsucesso/www/testesphp/galeriabrasil/instalar.php on line 318Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)Alguem pode me ajudar ?