I have seen problem with quick adsense plugin in IE 7.
In the adsense options it asks for alignment, i selected Left...It is working perfect in Firefox with left align of ad. But in IE the text comes below the ad. I checked the html it is due to the width of DIV. Firefox automatically adjusts the div width. But in IE div stretches itself to 100% thats y text moves to bottom.
Here are example of my website - http://www.headlinerwatch.com/9207/ironman-2010-placid-professional-hawaii.htm
I also seen same in one more website using same plugin chk that also -
Requesting the plugin developer to lookinto the issue and fix it asap.