Sidebar running into footer

I recently converted my site into a WordPress blog. After setting up the blog and adding content, I noticed the left sidebar (left sidebar is actually on the right side below the poll, it has lists of categories) runs through and into the footer. It doesn’t happen on the home page because the main content area is longer. It happens on pages where the main content area isn’t as long, such as http://www.bullseye-sports.com/main-menu/privacy-policy/.

I’m using IE7 with tabbed browsing. If I click off my page (listed above), click on a tab for a different site, click on that site’s page, then click back to my page, then my page is showing properly (footer below left sidebar).

Anyone know why this is happening? Is this an IE7 issue and if so, is there a fix?

Thanks.