为何我的一条insert语句插入两条数据？
mysql> delete from data;
Query OK, 8 rows affected (0.00 sec)

mysql> select * from data;
Empty set (0.00 sec)

mysql> insert into data(name,address,phone) values ('pangang1','daban1','09023539335');
Query OK, 1 row affected (0.00 sec)

mysql> select * from data;
+----------+---------+-------------+
| name | address | phone |
+----------+---------+-------------+
| pangang1 | daban1 | 09023539335 |
| pangang1 | daban1 | 09023539335 |
+----------+---------+-------------+
2 rows in set (0.00 sec)

mysql>
可能是哪里配置错了？
[root@node1 etc]# cat my.cnf
# Example MySQL config file for medium systems.
#
# This is for a system with little memory (32M - 64M) where MySQL plays
# an important part, or systems up to 128M where MySQL is used together with
# other programs (such as a web server)
#
# You can copy this file to
# /etc/my.cnf to set global options,
# mysql-data-dir/my.cnf to set server-specific options (in this
# installation this directory is /usr/local/mysql/var) or
# ~/.my.cnf to set user-specific options.
#
# In this file, you can use all long options that a program supports.
# If you want to know which options a program supports, run the program
# with the "--help" option.

# The following options will be passed to all MySQL clients
[client]
#password = your_password
port = 3306
socket = /tmp/mysql.sock

# Here follows entries for some specific programs

# The MySQL server
[mysqld]
port = 3306
socket = /tmp/mysql.sock
skip-locking
key_buffer = 16M
max_allowed_packet = 1M
table_cache = 64
sort_buffer_size = 512K
net_buffer_length = 8K
read_buffer_size = 256K
read_rnd_buffer_size = 512K
myisam_sort_buffer_size = 8M

# Don't listen on a TCP/IP port at all. This can be a security enhancement,
# if all processes that need to connect to mysqld run on the same host.
# All interaction with mysqld must be made via Unix sockets or named pipes.
# Note that using this option without enabling named pipes on Windows
# (via the "enable-named-pipe" option) will render mysqld useless!
#
#skip-networking

# Disable Federated by default
#skip-federated

# Replication Master Server (default)
# binary logging is required for replication
log-bin=mysql-bin
#######################################################
log-bin=/var/log/mysql/updatelog
binlog-do-db=test
replicate-same-server-id
master-host=192.168.1.128
master-user=backup
master-password=pangang
master-connect-retry=60
replicate-do-db=test
binlog-ignore-db=mysql

#######################################################
# binary logging format - mixed recommended
binlog_format=mixed

# required unique id between 1 and 2^32 - 1
# defaults to 1 if master-host is not set
# but will not function as a master if omitted
server-id = 1

# Replication Slave (comment out master section to use this)
#
# To configure this host as a replication slave, you can choose between
# two methods :
#
# 1) Use the CHANGE MASTER TO command (fully described in our manual) -
# the syntax is:
#
# CHANGE MASTER TO MASTER_HOST=<host>, MASTER_PORT=<port>,
# MASTER_USER=<user>, MASTER_PASSWORD=<password> ;
#
# where you replace <host>, <user>, <password> by quoted strings and
# <port> by the master's port number (3306 by default).
#
# Example:
#
# CHANGE MASTER TO MASTER_HOST='125.564.12.1', MASTER_POR