It works with this configuration Rated 4 out of 5 stars

I have recently found out that it can work if you use:

Firefox 3.6.23
Why do work Adsense Add-on
ADD-ON COMPATIBILITY REPORTER

I have to log in to my Adsense account every time I start Firefox. After the login I can close the webpage and Why do work starts to display my earnings (if you rely upon the automatic login in the Add-on settings it just doesn't work).
I hope it can help someone else, too.

This user has 2 previous reviews of this add-on.

Rated 1 out of 5 stars

I've been waiting for a fix for over 6 months now and it still doesn't work (Firefox 3.6.16). Uninstalling.

Rated 4 out of 5 stars

working in Firefox 3.6.13
Takes too much space in statusbar. Can you make it more compact? I have other plugins in statusbar and yours takes as much space as other combined.

Not working. Rated 1 out of 5 stars

I've been "staying tuned" for a few months now, but it still doesn't work. I guess this is now "abandonware". And since it doesn't work *at all* I can't give it any other rating than just 1 star...

Works For Me ! Rated 5 out of 5 stars

Hi, I made a little tweak for this plugin that let you see your adsense earnings both on dollars and on your own local currency too.
http://www.keywordspeak.com/2010/11/display-your-adsense-earnings-on-your.html

Rated 4 out of 5 stars

Great add-on but would dearly love to have the option to save my password instead of having to enter it each time I open my browser.

This user has a previous review of this add-on.

Rated 2 out of 5 stars

Was working, then stopped working. Can't seem to login to AdSense. Using Firefox 3.6.8.

Too bad this stopped working.

I like this, but i have a problem Rated 5 out of 5 stars

I really like this, would be nice if they would update it. Not compatible with 3.6.3.

This review is for a previous version of the add-on (1.3). 

Not compatible 3.6.2 Rated 4 out of 5 stars

I really like this, would be nice if they would update it. Not compatible with 3.6.2.

This review is for a previous version of the add-on (1.3). 

Version 1.3 Updated

To include compatibility with the latest version. Thanks!

Rated 4 out of 5 stars

nice addon!
can you will make with scroll for all adsense (Content,Search,Feed)?

This review is for a previous version of the add-on (1.3). 

Rated 4 out of 5 stars

ty for the quick update, BTW when used with Vista Aero theme I get two options buttons is it possible to fix?

Theme: https://addons.mozilla.org/en-US/firefox/addon/4988

Pic: http://img85.imageshack.us/img85/9646/options.png

This review is for a previous version of the add-on (1.3). 

Rated 5 out of 5 stars

Add-on works great. Account set to English / USD.
Great job! and good support on your site for feedback and suggestions.

This review is for a previous version of the add-on (1.3). 

Rated 3 out of 5 stars

It works, but the display leaves something to be desired. It shows five numbers and an icon, which is way more than I wanted. I would prefer to just see the amount earned, with the other information possibly in a tooltip. The ability to have data for multiple time periods at once would also be a welcome addition.

This review is for a previous version of the add-on (1.3). 

Rated 5 out of 5 stars

A+++ Works great!!! I am a US/EN user and have no problems at all. Note to others who are using the old AdSense Notifier: That one stores your password in plain text! VERY dangerous. The WhyDoWork one is secure!

This review is for a previous version of the add-on (1.3). 

Rated 1 out of 5 stars

This add on is a good idea but it just does not work. After it continuously trying to login it now shows maximum login attempts reached. Sorry i have to uninstall it. Let me know if you ever get it to work right.

This review is for a previous version of the add-on (1.3). 

Rated 2 out of 5 stars

I like your add-on. Though it keeps howing "Attempting to login to Adsense". I can login to adsense directly with my browser no problem. If i go back to preferences about 3 times and retype the password it eventually starts to work.

This review is for a previous version of the add-on (1.3). 

Rated 5 out of 5 stars

Great little addon, I love it.I'm an obsessive-compulsive Adsense account checker so this should help with my addiction.
I had a problem with the Euro sign as well, but a short email correspondence with Matt fixed it right away. Way to go!

This review is for a previous version of the add-on (1.2). 

Rated 5 out of 5 stars

works for me! Mac OS X / Windows 7 and in the USA.

This review is for a previous version of the add-on (1.2). 

Rated 1 out of 5 stars

Not woking for me, it displays "Loading..." Thats all. my Adsense is German and Set to EUR.

This review is for a previous version of the add-on (1.2). 

Needs to be in English!

Your account language needs to be English for the add-on to work. Thanks!

Rated 1 out of 5 stars

Using 1.2 it is not working, i have setup login/pw it displays "Lodaing..." thats all. My Adsense is German and set to EUR.

This review is for a previous version of the add-on (1.2).