I just updated to FF 6.0.1 and when I start FF, I see more than 10 plugin-container.exe files running which is bogging down my system. How do I stop this?

Are you using Clear Recent History? *https://support.mozilla.com/kb/Clear+Recent+History If you do then it is possible that Firefox wasn't able to do that and does it on the next start instead. ---- See "Hang at exit": *http://kb.mozillazine.org/Firefox_hangs *https://support.mozilla.com/kb/Firefox+hangs