I have a left and a right sidebar. Whenever I put an advertisement in one it shows up in both.
How can I correct this problem.

I have 2 sites with the Atahualpa theme, one is the latest one, and one is 3.4.9 and they are on different hosts, and the same problem occurs.

I have Wordpress 3.01 Any help would be appreciated. I love the Theme but I am beginning to wonder if there is just too much tech stuff involved as I spend more time servicing the theme than working on the blog.

Also. I cannot get the child site to show up in either blog. I must be doing something wrong here.

I assume you are using some plugin/widget to display the ad. What happens if you put two copies in one sidebar?
Have you read all the instructions about the plugin/widget and ask this question to the author?