Nokia Lumia 521 and Bing search page

[WPCentral Question]

Why does my Nokia Lumia 521 keep defaulting to the Bing search page?
I am never connected to the Internet so this page is useless to me. How do I prevent it from continually springing up?
Besides, I never use Bing search on my computer and would not use it on my phone. Can I get rid of the Bing search page.

Also, does anyone else have experience with a Lumia 521 that keeps going into the landscape mode? My phone goes into landscape mode even if the phone has not physically shifted position. Am I missing something?

Thanks
DH