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). 

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.