MySQL Problem

i cannt start mysql .

Code:

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[root@mercury /]# service mysqld start
Initializing MySQL database:                              [  OK  ]
Timeout error occurred trying to start MySQL Daemon.
Starting MySQL:                                            [FAILED]

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any idea? im on centos 4

Post the output of doing

Code:

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#tail /var/log/mysql.log

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errr.. ive reinstall OS. after that its running .. sorry for disturbing you.