I have a counter-question. When I go to your blog's Home page, http://dmguru.wordpress.com/home/ , I see no posts, although I do see recent posts listed in the sidebar. Have you by chance deleted any part of your blog? My suspicion, given the URL of your Home page, is that you've deleted the actual Blog page itself and tried to replace it with Home.
Don't do that.
If you deleted something before, reinstate it. That will be your home page, actually. If you want it called "Home" you can tweak the names in the tabs most likely, although you may have to get the CSS upgrade to do it. On the page http://dmguru.wordpress.com/ which is actually your blog's home page, I see the titles of the posts sequentially, as things should be.