A while back I mentioned my unhappiness with a change Mozilla made in Firefox 9 with the new ‘Don’t load tabs until selected’ feature introduced in Firefox 8. For those who don’t recall the change, in Firefox 8 when this option was selected, any tab (normal or pinned) would not load until selected. Then in Firefox 9, this option only applied to normal tabs and pinned tabs would always load upon startup. Mozilla’s justification for the change was that the purpose of the pinned or app tabs was for web applications (chat, email, etc.) and therefore it would be desired…