How to clear the browsing history, the Safari cache and cookie files in Safari for the iPad.
Select Settings from your Ipad home screen:
Select Safari from the Settings column on the left. Towards the bottom of the Safari column you’ll see 3 buttons – Clear History, Clear Cookies and Clear Cache. Tap any of the 3 to perform that action:
Repeat the above steps until each item (cache and cookies) have been cleared.