firefox help

[ducis]

when ever I close firefox it asks me if I want to clear private data
the problem is some one else goes on my comp and then they clear all my data when the close firefox how could I stop it from asking me if I wan to clear my private data
ty
firsttimebuilder

 

[pdc76]

go to tools, options, and click on the privacy tab. the options are at the bottom of that tab.