When FF 4 was released, I upgraded and noticed that my WP dashboard is considerably slower, especially on my netbook (less memory I guess, but also Windows 7). In particular when typing posts, I type about 5x faster than the text appears and when it does after some waiting, there are parts of text missing. I deinstalled FF4, installed the last version of 3 and things were back to normal. Then when FF5 was released I hoped that I would be able to use it, but the problem is the same. It feels a bit like running an old WP because there is a plugin incompatible with the new version, but I actually have FF3 installed because otherwise WP is extremely annoying. Any thoughts on how this could be? I did not notice any difference between WP 2.9, 3.0 and 3.1, the problem seems to be FF after version 3.