The Cinnamon desktop environment in Linux Mint 15 by default stores a list of all the recently accessed files in the “Recent Files” section which is displayed whenever Menu is accessed.
Here is how to turn this off :
Right click on Menu and select “Menu settings”.
Then, remove the tick next to Â “Show recent files” and close the dialog box.
From now on, whenever Menu is accessed, there will be no list of recently accessed files.