Since this morning, plug-in container.exe has not started (yay!), and I'm not having any problems at all. Web navigation has been fast and sweet, and for the first time in YEARS my Firefox memory usage has remained in the 74,000-78,000 range, no wild explosions of 150,000+ CPU, no freezing, no pages that stop loading and refuse to refresh, etc, nothing but sweet sailing. Has plugin-container finally been exterminated, or is this a strange (and welcome...) glitch?