I faced something like these after modifying my.cnf:
110330 18:00:44 [Note] Plugin 'FEDERATED' is disabled. InnoDB: The InnoDB memory heap is disabled InnoDB: Mutexes and rw_locks use GCC atomic builtins InnoDB: Error: log file ./ib_logfile0 is of different size 0 5242880 bytes InnoDB: than specified in the .cnf file 0 262144000 bytes! 110330 18:00:45 [ERROR] Plugin 'InnoDB' init function returned error. 110330 18:00:45 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed. 110330 18:00:45 [Note] Event Scheduler: Loaded 0 events 110330 18:00:45 [Note] /usr/sbin/mysqld: ready for connections. Version: '5.1.41-3ubuntu12.8' socket: '/var/run/mysqld/mysqld.sock' port: 3306 (Ubuntu)
Can someone help me to solve this?