Today early monday morning, started off with a discussion, Smart Navigation. As usual research was done. google provided some intriguing material. Looks like another controversial situation., a good explanation of Smart navigation,
and then go through this:
SmartNavigation and why not to use it

and then AutoPostback and SmartNavigation Together Clears Form  

At sometime we did enable smartnavigation for our web forms. But we did have lots of div tags in our page, and it looked like smartnavigation managed scrolls only for full body. I overcame that by disabling smartnavigation and writing javascript code of my own. Need to check as to what else smartnavigation does do. Will put up the code here after that. Until then, happy snoozing.