When I use Visual Editor to write a new post (full editor ) in FF 5, it goes very slow. What I mean is that when I type, there is an intermittent delay of several 1-2 seconds before a letter appears on the screen, the same if I backspace. Sometimes I can just type way a few words before this symptom hits, and then I get stuck for a while, and then it resume normal speed for another 30 seconds or so.
This makes writing a post take extremely long,and definitely interrupts the flow of my writing. I disabled all of my addons and it hasn't change a thing.
Firefox has been my main browser for the longest time, and I would hate to lose it. However, if I have to, I'll switch to Chrome or IE as my blogging is more important than browser loyalty. Typing the same post in IE 9 goes swimmingly.
Unless someone has an idea, I think its time for FF and I to part.