Rated 3 out of 5 stars

This is a good addon, but it's not working correctly for me.
It only shows a portion of the original image.
Here is a screenshot: http://i40.tinypic.com/2crw0p2.jpg
And another: http://i44.tinypic.com/10y1lhz.png
I'm using Firefox 8 in Ubuntu.

This review is for a previous version of the add-on (1.5.8.1-signed). 

Hello, thanks for posting those images; that helps me understand what you're seeing. I think the Ubuntu problems are solved by 1.6.1beta1: https://addons.mozilla.org/en-US/firefox/addon/thumbnail-zoom-plus/versions/