Comment 3 for bug 288466

I'll explain how to see what I'm talking about:

Click "Edit" on an existing material that already has an image.
Scroll down to the "Image" fieldset.
Right click on the actual image that LOOKS like a thumbnail
click "view image" or click "properties" and you will see that it is actually full size.

Even worse, scroll down to the "huge image" fieldset.
If that doesn't cripple your computer's performance or kill your browser, you will see that this one too is the FULL image, not a thumbnail

This is not a really big issue because all the images that look like thumbnails in the normal user interface are actual thumbnails 100px wide. This is only an issue for nodes that are being EDITED, which does not happen all that often.