I can't replicate the error but my internet explorer customers have been saying they get this message:
"To help protect your security, Internet Explorer has blocked this web site from displaying content with security certificate errors. Click here for options..."
The site: http://bit.ly/n2lkGl
Your site has both secure and non secure items. You have to make sure that when you access site using https - all resources be delivered throgh https as well.
<img src="http://www.backlinkbuild.com/o/images/img-cart.png" alt="cart" />
should be changed to:
<img src="https://www.backlinkbuild.com/o/images/img-cart.png" alt="cart" />
or just to relative URL, so that it does not matter, which protocol you use:
<img src="/o/images/img-cart.png" alt="cart" />