Lock master log position

Is there anyway to lock master log position? every time I restart putty master log position is different!

e.g if currently it is at

 +------------------+----------+------------------------------+------------------+
 | File             | Position | Binlog_Do_DB                 | Binlog_Ignore_DB |
 +------------------+----------+------------------------------+------------------+
 | mysql-bin.000003 |      431 | aqsacheck,xgeartrack,xgeardb |                  |
+------------------+----------+------------------------------+------------------+

Than after restarting putty the position is different

+------------------+----------+------------------------------+------------------+
| File             | Position | Binlog_Do_DB                 | Binlog_Ignore_DB |
+------------------+----------+------------------------------+------------------+
| mysql-bin.000003 |      543 | aqsacheck,xgeartrack,xgeardb |                  |
+------------------+----------+------------------------------+------------------+

What can I do that the postion remains the same even if I restart putty?

The issue is that that every time I restart putty I have to start slave again and change master again if I don't do that the replication doesn't work.

I used following steps for replication

MASTER SIDE

server-id = 1
binlog-do-db=tecmint
relay-log = /var/lib/mysql/mysql-relay-bin
relay-log-index = /var/lib/mysql/mysql-relay-bin.index
log-error = /var/lib/mysql/mysql.err
master-info-file = /var/lib/mysql/mysql-master.info
relay-log-info-file = /var/lib/mysql/mysql-relay-log.info
log-bin = /var/lib/mysql/mysql-bin

# /etc/init.d/mysqld restart
# mysql -u root -p

mysql> GRANT REPLICATION SLAVE ON *.* TO 'slave_user'@'192.168.1.2' IDENTIFIED BY 'your_password';
 mysql> FLUSH PRIVILEGES;
  mysql> FLUSH TABLES WITH READ LOCK;
 mysql> SHOW MASTER STATUS;

#  mysqldump -u root -p --all-databases --master-data > /root/dbdump.db
mysql> UNLOCK TABLES;
 mysql> quit;

scp /root/dbdump.db root@192.168.1.2:/root/

SLAVE SIDE

# vi /etc/my.cnf

replicate-do-db=tecmint
relay-log = /var/lib/mysql/mysql-relay-bin
relay-log-index = /var/lib/mysql/mysql-relay-bin.index
log-error = /var/lib/mysql/mysql.err
master-info-file = /var/lib/mysql/mysql-master.info
relay-log-info-file = /var/lib/mysql/mysql-relay-log.info
log-bin = /var/lib/mysql/mysql-bin

 # mysql -u root -p < /root/dbdump.db
 # /etc/init.d/mysqld restart

 # mysql -u root -p

 mysql> slave stop;
 mysql> CHANGE MASTER TO MASTER_HOST='192.168.1.1',                    MASTER_USER='slave_user', MASTER_PASSWORD='yourpassword', MASTER_LOG_FILE='mysql-bin.000003', MASTER_LOG_POS=11128001;
mysql> slave start;
mysql> show slave status\G

for the first time it is configured everything works fine the problem occurs when I restart putty the master log file is different and I have to run this command again (with new master log position)

mysql> CHANGE MASTER TO MASTER_HOST='192.168.1.1', MASTER_USER='slave_user', MASTER_PASSWORD='yourpassword', MASTER_LOG_FILE='mysql-bin.000003', MASTER_LOG_POS=11128001;

which I believe is wrong because when ever I start putty the replication should start automaticallybut I first have to check master log position and run the query mentioned above to start slave.