Qutoe:If you haven't already, you might want to check your browser cache settings. It may so happen that this is set to a short interval (~2-3 days) and the browser deletes everything after that time period. So, if you haven't logged in the last 2/3 days, chances are you will have to punch the password in again.
(Go to Tools->Options->Privacy Tab if you're on Firefox and Tools->Internet Options->General Tab if you're on IE.)
Dear Skarpio.
Thank you for prompt reply.Please note I am using these site for long time and my cache setting is 60days.Previously there was no such problem and still I am not having the problem with other blogsites except traderji.
Regards.