No content after upgrading to wordpress 2.9.1

Hello friends,
Yesterday I upgraded one of my blog to wordpress 2.9.1. After upgrading to wp 2.9.1 wordpress has suddenly stopped showing content of my post. Although it shows post title,ads,related posts there is no content at all. https://techgenuine.com/2010/01/top-10-android-and-google-nexus-one-mobile-apllications/ Check this link to see what I am talking about.

I was able to see the content in preview but after scheduling it for later publishing it stopped showing the content. What could be wrong? I have not used any new plugin after that so I have very less doubt on plugin conflicts.
P.S: It is not throwing blank page. This is different problem.