title: Many records in mysql suddenly dissapear/missing
body: <p>I have a wierd case. Suddenly some records (so many records) in one of the table are missing.. first, I tought it is caused by bug in my PHP script. But, I checked it, there's no <code>DELETE</code> operation in my script, only <code>UPDATE</code>. Does anyone knows what happen with my MySql?</p>