One of our peer group developers contacted me today stating that they were inserting a value of 10 in one of the columns in their tables. But after the insert, when they query the table they were getting the value as 0.
Logged into the box to check what was happening. Luckily binlog was turned on that mysql instance. Ran the mysqlbinlog utility on the current binlog and greped for the particular primary key value.
It listed an insert statement and an update statement. There was the culprit, the value of 10 was getting inserted but soon the application was following it up with an update to value 0. Yeah it is always not the database ;)