Puntuado con 1 de 5 estrellas

It's not working for me under 3.0b5. But it could be because this extension has been made compatible for 3.0b5 by the developers. I had to bump this extension myself for it to install in the latest beta.

So hopefully the devs will get this compatible for 3.0b5 very soon. I miss Minimize to Tray so much from Windows. I finally found an extension that does the samething for me in Linux, but it's not working.

Esta valoración es de una versión anterior del complemento (0.1.8). 

If the extension says that is compatible with beta3 why you complain it's not working with beta5? And if you use a beta product you should also remember it is a development version.
The 0.1.9 version is ready on our site, but it has yet to be approved here on mozilla add-ons.