Thank you a lot, this is what i was after.
its registry again.
by the way what is the purpose of below line in the both on and off .reg files:
Quote: Originally Posted by debugged
Or simply untick recent items:
Start > Properties > Start Menu tab: untick "Store and display recently opened items...". Click Apply.
Thanks debugged, this is related to the task bar history and I already un-ticked it
and thank you all who contribute and shared there information with me.