Did you clear history and webiste data in Settings - Safari, force close the app and reset your iPad?
To force close: double tap the Home button to show the multitask bar, then slide the thumbnail above the Safari app icon towards the top of the screen.
To reset: press and hold Home and Power button simultaneously until the Apple logo appears. Let go of both, your iPad will power up on it's own. This reset won't change settings or remove data. It might help with your issue, though.