Multiple instances of firefox AND secondary launches with both!
I desperately want to run two instances of firefox at the same time (a local one and a portable one) and YET have the freedom to have secondary launches with both (see, I want to use this amazing program to choose which one I want to use whenever I click on a link in a program/url in windows explorer). I've learnt here that firefox portable simply doesn't support secondary launches in Multiple Instances mode.