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I'm getting this error while trying to start the mysql server

$ sudo mysqld_safe --user=mysql
110425 23:11:33 mysqld_safe Logging to '/usr/local/mysql/data/unknown-e0-f8-47-0c-04-a0.lan.err'.
110425 23:11:33 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data
110425 23:11:35 mysqld_safe mysqld from pid file /usr/local/mysql/data/ ended

any suggestions?

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There is no error there - what does the log say? – Mark Apr 26 '11 at 7:42
Which version of MySQL ?? v5.5.11 doesn't work (can't start) on Snow Leopard, but the old v5.1.56 do work (can start). – Rene Larsen Apr 26 '11 at 10:21
Check /var/log for mysql related logs and start trudging through them until you see some errors. – ConstantineK Apr 26 '11 at 11:39
Could you please dump contents from /usr/local/mysql/data/unknown-e0-f8-47-0c-04-a0.lan.err? Looks like an error related to ethernet address binding, I guess. – Ngoc Pham Apr 27 '11 at 5:11
@Rene: Mysql 5.5.11 (64 bit version) running here on Leopard (binary downloaded from mysql site) quite happily. – nimrodm Apr 27 '11 at 20:08

Change skip-locking to skip-external-locking in /etc/my.cnf. This problem can happen if you had a different MySQL installed previously. I experienced this problem when I moved to MAMP.

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