Widget problem in resolution

My blog link is http://blog.gigstart.in/.
I am using “resolution” theme and it worked fine all the way but when I add a post in a particular ;category’ like http://blog.gigstart.in/how-to-market-yourself-as-an-artist/, The right sidebar is shifted to the bottom of the post and “Leave a reply” at place of right sidebar and it looks totally absurd.Please help me fic this.

Thank you