Yahoo mail is very slow
For at least a few weeks yahoo mail has been very slow. It is slow to load the yahoo homepage, but it's worst trying to log into my mail. After I type my email address and password and pressed enter, it can take almost a minute for my mail (inbox etc) to actually load. Then it is also slow signing back out. Have noticed no problems with IE 8.
Opaite Mbohovái (1)
If you are running the add-on Maximum Adblock, disable the add-on and restart FF. Cleared up the Yahoo lag issues for me.