Not sure if this will help, I had this problem a few versions back, I read somewhere on a blog that clearing the cache works, and it did for me. shame I can't remember the site now, I would post it here.

this will show you how to clear the cache in Firefox https://support.mozilla.com/en-US/kb/How%20to%20clear%20the%20cache I hope this helps :-)

no it did not help.... it is there on e-mail for internet explorer but I had a problem with it crashing and called for support and FF has not been right since they FIXED the problem which is worse now than before! I tried clearing cookies but still did not work!

thanks though!

hmmm ok so Firefox Crashed and it hasn't worked properly with your email since I wander if it is corruption in your existing profile ? here is a link here on how to setup a second profile, you could do this to test if the old one is causing the trouble. it's for setting up profiles on Windows, I'm not sure what OS you are using.

Setting up a new Profile for Firefox

OH OH MADE a mistake I think I picked "choose folder" and now I have no Mozilla well it must be somewhere...

I have the box back now but no shortcut to e-mail now I have to log on each time but the arrow box is there I am sure I need service on my computer.... it keeps sending me a try again message when I log on..... could not connect. But THANK you I can not scroll through my 3oo0+ business e-mails!

to get your old profile back again, run the profile manager and select your old profile it should just be called default, you should get all your old settings back.

I've been thinking, sometimes custom themes can cause issues with Firefox, do you use a theme, if so try setting it back to the default theme.