Hello zerodha,
i had the similar problem and when i spoke to your tech team they said if you dont use terminal for some time it will apper.. but in older version i didnt had any problem even though i was not using the software for whole day .so please check for a better solution than closing using task manager ..
the link below for the error msg http://img15.imageshack.us/img15/7290/4tgl.png
It is an advanced software. So you must learn the advanced exit methods (Task manager... End task).
Unlike simply pressing close button in other softwares.