CMS Thumbnails are fetched as FULL SIZE.
 

I'm using thumbnails.

On content.php (Sections or Categories) - thumbnails are fetched as thumbnails (good - page is small and fast)
i.e. http://www.wood-furniture.biz/forums...0-Design-Ideas

But on pages like here:
http://www.wood-furniture.biz/forums...-Voltaire-Desk

- thumbnails are fetched as FULL SIZE image - bad thing - page is bigger and slower.

Is there a way to fix this problem?