Rated 3 out of 5 stars

I just installed this on FF 7.0b1, and the display on the Action Bar reports "NaNMb" (where NaN presumably stands for "not a number"), and when I mouse over it, the tooltip displays "Normal Firefox Memory Usage." Is this what is intended? If so, it isn't helpful. I need hard numbers. I also tried installing it on the Toolbar, and there it displays a green "sand dollar", with the same message upon mouseover. Help please.

This review is for a previous version of the add-on (1.5.1-signed.1-signed).  This user has other reviews of this add-on.