k2 comments falls down below content

I tried with firebug to find the issue, change padding, margins etc but I just could not get it. this is affecting the blog layout. when the menu is using a single item then it is fine but with blog layout the comments box falls below the content and seems to be stuck there. I even tried to add float right but it stayed in the content area.

Single page view:
www.tandsfashions.com/ladies-purses.html

Blog layout page view:
www.tandsfashions.com/blog.html

comments box falls down.. also I tried using left/right/user3 and they all result in the same view

And how do you want to place comments?

on the right side like the single page view

It looks like you have some unclosed div within your articles in main column that breaks layout