washingtonsblog on "Widening Post Content Makes Google Adsense Too Wide"

I widened my post content in my site Washington's Blog by widening the wrapper to 1012:

#wrapper {
margin: 0 auto;
width: 1012px;

But now my Google Adsense is ridiculously wide.

How can I keep the wide post content, but make Google Adsense less gargantuan?

Any help greatly appreciated!

what theme are you using?
Where did you download it from?

http://codex.wordpress.org/Forum_Welcome#Include_as_Much_Information_as_Possible

Twenty Ten. I downloaded directly from WordPress, although I've done some tweaks ...

what plugin or code are you using to add the adsense code?

The official Google AdSense plugin.