Slave SQL thread got hanged
You may need to reset the relay logs. PLEASE DON'T USE RESET SLAVE;

You need to reset the relay logs in such a way that it picks up from the last SQL statement it executed.

Please run the the following:

STOP SLAVE;
CHANGE MASTER TO MASTER_LOG_FILE='binlog.001403',MASTER_LOG_POS=32820355;
START SLAVE;


If Seconds_Behind_Master stays at zero, CONGRATULATIONS !!!

If Seconds_Behind_Master goes back to 7720 immediately, check the date and time set in the OS on the Master against the the date and time set in the OS on the Slave.

Give it a Try !!!