Clear internet explorer history

Hello,

We are using ESS under ITS server Version 6200.1025.7214.5 and SAP HR 4.7.

The Mill Employees use plant floor PC's to access their ESS accounts. It has been discovered that once an employee calls up their check stub and then closes out their ESS session, the check stub was served up as a pdf file and is still held in memory. Now if a second employee comes behind that first employee and calls up Internet History, they can now view the first employees check stub. Even with the History setting changed to "0", you can still view the file for some period of time.

We want to delete the pdf file automatically when the employee closes the internet explorer.

Any body can help please.