此扩展会导致Firefox 11无法正常结束进程 Puntuado con 1 de 5 estrellas
（on windows xp, firefox 11. Use this addon, then click firefox exit menu, you will see 'firefox.exe' process cannot proper stop over itself, the memory will soaring, and CPU 100%;
There are some memory overrun vulnerabilities, please verify repair as soon as possible.
un-useable in Linux Puntuado con 1 de 5 estrellas
can not see the icon even I added that string pref, I'm in Linux with En Firefox.
Usage instructions are lacking Puntuado con 3 de 5 estrellas
For English you need to create the mentioned preference as a "string" pref. Also, the toolbar button is automatically placed on the Add-on Bar (ain't gonna see it if the Add-on Bar is hidden), not placed in the Palette as I would have expected. "About this Add-on" comments on the /en-US/ addons website should be in English.