Good but really slows you down Rated 5 out of 5 stars

Update: There is a new version (1.0.15) that is bug-free and works fine.You should get it from here:
https://addons.mozilla.org/en-US/firefox/addon/simple-currency-converter/versions/
Problem solved.Thank you Dev
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My earlier post:
It has a bug. I used to love and use currency converter version 1.0.13 for FireFox, and it does what it is supposed to do, but it really slows the browser down, especially when trying to load Google Images or vids. With this add-on enabled, Firefox sometimes stops altogether and says (not responding). This problem goes away as soon as I disable the converter. It must be scanning for prices continuously, (even when disabled) and I informed the dev, but I guess there is no way to turn it off completely. What a shame! :(

This review is for a previous version of the add-on (1.0.13.1-signed). 

Please try version 2.0.4.
Have totally rewrote it

A perfect little add-on Rated 5 out of 5 stars

It does exactly what is says on the box. There's nothing to click on, it just converts. And it's fast too. Even if there are many prices on the same page, such as e-bay search results. I am impressed enough to give it 5 stars.

This review is for a previous version of the add-on (1.0.9.1-signed).