DaStarBuG - 2:51 pm on Dec 21, 2011 (gmt 0)
can you give a link as reference?
It does not matter at all where you place the AdSense code.
The only thing that is "important" is the sequence in which you place your ad code because the first unit will be filled first.
For years before they made them somewhat asynchronous I placed my AdSense ad unit codes at the bottom and positioned them via CSS.