Why user see blank page only from tabpage?

Why user see blank page only from tabpage?

References

Reference NO 1

https://support.mozilla.org/questions/966423

Reference NO 2

http://answers.microsoft.com/en-us/ie/forum/ie9-windows_vista/new-tab-page-on-internet-explorer-keeps-changing/6dd63d7a-1181-4ffb-a256-225ba5a528e1

Reference NO 3

http://forums.mozillazine.org/viewtopic.php?f=38&t=2483225

Reference NO 4

http://productforums.google.com/d/topic/chrome/3Yo4whcsNao

Reference NO 5

http://www.cyberciti.biz/faq/howto-mozilla-firefox-remove-disable-hide-new-tab-page/

Reference NO 6

http://superuser.com/questions/468524/chrome-new-tab-page-changed-but-i-want-it-back

Reference NO 7

http://developer.chrome.com/extensions/override.html

Reference NO 8

http://gochromeglestuff.blogspot.com/2013/04/chrome-28-dev.html