Puntuado con 3 de 5 estrellas

I like the idea. But can't figure out why this extensions shows '166Mb' while task manager says '190,000Kb' using Firefox 4b9pre

Esta valoración es de una versión anterior del complemento (1.1.1-signed). 

The add-on uses the Firefox memory service to get memory information. This is the same service used by about:memory, which indeed is less than what is displayed in task manager.