Since innodb_log_arch_dir has no relevance under MySQL,
there is no need to specify it any more in my.cnf.
LOAD DATA INFILE in AUTOCOMMIT=1 mode no longer does
implicit commits for each 1 MB of written binlog.
Fixed a bug introduced in 4.0.4: LOCK TABLES ... READ LOCAL
should not set row locks on the rows read. This caused
deadlocks and lock wait timeouts in mysqldump.
Fixed two bugs introduced in 4.0.4: in AUTO_INCREMENT,
REPLACE could cause the counter to be left 1 too low.
A deadlock or a lock wait timeout could cause the same problem.
Fixed a bug: TRUNCATE on a TEMPORARY table crashed InnoDB.
Fixed a bug introduced in 4.0.5: if binlogging was not switched on,
INSERT INTO ... SELECT ... or CREATE TABLE ... SELECT ... could
cause InnoDB to hang on a semaphore created in btr0sea.c, line 128.
Workaround: switch binlogging on.
Fixed a bug: in replication issuing SLAVE STOP in the middle of
a multi-statement transaction could cause that SLAVE START would
only perform a part of the transaction. A similar error could occur
if the slave crashed and was restarted.