i have an iphone5, unmodified. While using safari with several tabs open, one tab got confused and the landscape/portrait orientation got stuck. So the image and screen controls were in portrait with the phone oriented in landscape and vice versa. I could not use the page controls and the area that the screen should have been filling was black. I went back to the home screen and shut off safari. I cleared all history in the settings page. Safari works properly again. BUT sometimes when i leave safari running on whatever page (apple.com for example) and switch to another app, then doubletap the home button to bring up any open apps, safari appears with the same page that it got stuck on when the problem happened 2 months ago. This happens randomly, not always. How can i make this go away? It is not a work-safe page.