adsense placement question

hello there i m trying to place a ad link unit of 5 ads below the header but above the post area of my blog.You can see here what i mean,demo ad here bar will be replaced by the link ad unit.See here pls http://entrepreneur-opportunities.blogspot.com/ I m putting the code between <div id='content-wrapper'> and div id='left-sidebar-wrapper'>.But when i see the blog after saving the template the ad doesnt appear but a blank space appears instead.Am i doing something wrong?Pls let me know

 

It take sometimes for the ad to appear probably?

 

I'm seeing the below

Demo Ad Here Demo Ad Here Demo Ad Here Demo Ad Here Demo Ad Here Demo Ad Here

 

Change to this maybe?

and use