Doesn't work in FF 4.0 Rated 3 out of 5 stars

I am going back to FF 3.x because this add-on doesn't work to open links in a new tab in FF 4.0. Another similar add-on also does not work in 4.0. For some reason developers are blocking the opening of new tabs when clicking on links or favorites, etc. Shouldn't need an add-on to begin with if FF would add this basic and highly desirable feature.

This review is for a previous version of the add-on (0.1.2010121601.1-signed).