Yes, we are using smartSearch filter to search and filter the blogs and we have a pager webpart at the bottom and a specified number of blogs is specified on each page. Although wrapping it up with updatepanel( webpart>configure) resolves the issue of resubmission, the page always redirects to page1 from blog. for instance , if I click on a blog in page3 and click back it redirects back to page 1 not page 3