Why did I just lose some reputation without any explanation in my profile?
By Friday 8/06/2012 my reputations were 500+. But today i.e on 11/06/2012 when I logged in to my Stack Overflow account, what is see is my reputation has come down to 384. I haven't got any message from the Stack Overflow for the reason of this reduction,neither my account shows any record of downvoting that might have lead to the deduction of my reputation.
Can anyone help me through this as to whom and how should I contact? Regards.