Today i was trying to install the new release. I already managed to install the 0.6 release so I have some experience with the procedure.
My system is a virtual debian linux. uname -a is Linux 2.6.9-023stab044.16-enterprise #1 SMP Fri Nov 23 20:56:09 MSK 2007 i686 GNU/Linux
MySQL Client API is 5.0.27.
Configuring Magento database connection gives me following error for host=/var/run/mysqld/mysqld.sock:
aparently the configuration setting is ignored.
SQLSTATE[HY000]  Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
my phpinfo tells me that i have set:
AFAIK the MYSQL_SOCKET value is a compiletime setting of the PHP mysql API. Therefore i did not find any way to change this setting to the correct value.
What made me wonder is, that magento seems to prioritize MYSQL_SOCKET value over the php.ini setting mysql.default_socket.
Even setting the host setting in magento will be ignored.
Currently my workaround is to set the host value to 127.0.0.1 to force connection to use networking and not the filesocket.
I’m reporting this because Im unsure if this is a magento bug or sth else.