Time for a clean reinstall of FF
The upgrade to FF6 was causing constant stalls and "application not responding" problem. I upgraded to FF7 as soon as possible but the probems continued. So I exported by bookmarks and my NoScript whitelist and completely wiped all traces of FF and all plugins. Clean reinstall, added back NoScript and a few other plugins and FF has been great ever since. Since I only use FF w/ NoScript, next I'm going to try turning off McAfee's real time scanning of scripts as I suspect that's slowing things down - I wouldn't say FF is sluggish, but after reading an article on Tom's Hardware it made me realize I might be able to find more performance gains I didn't know I was missing.