you can solve this by opening firefox in Safe Mode . Since it disable all the extension and plugins so you can check whether you are fine with your email site.

once all done you can remove the plugin which produces effect there.

the other thing is checking about the flash (it makes too mashes) whether is updated and compitable with your browser.

if not then update the flash.

I've checked and found JavaScript to be actually enabled.

How exactly did you do that?

Do you run any extensions which may block Javascript, e.g. NoScript?

It's working again now but I didn't fix anything.

Unfortunately some other sites are now not working, which again are actually good in another browser. No reference to JavaScript - just blank pages.

Not sure what's going on here. Trying to access the links to articles in this newsletter https://mail.google.com/mail/u/0/#label/Ask+Leo/146f2788fde0a8b8 by Leo Notenboom.

Well, that is a link to your Gmail, which obviously only you can access.

This problem is only for instance,just Check once while your Flash is update or not. Also use once safe mode.

You can see this Thread Javascipt Enable

Is it just me, or does it seem your problems related only to websites where you need to log in?

Just a SWAG - see if that happens with Multi-fox disabled.

http://www.mozilla.org/en-US/firefox/30.0/releasenotes/ The first 2 Fixed items halfway down that page might have an impact on Multi-fox compatibility in Firefox 30, as compared to Firefox 29.

Sorry christ1, here are the links to the actual pages from the newsletter:

http://askleo.com/chkdsk_what_is_it_and_how_do_i_run_it/?awt_l=6v1R.&awt_m=JRIjcXz8.JdfbL

http://askleo.com/why_is_it_important_to_have_different_passwords_on_different_accounts/?awt_l=6v1R.&awt_m=JRIjcXz8.JdfbL

http://askleo.com/how-safe-is-it-to-let-my-browser-save-my-passwords/?awt_l=6v1R.&awt_m=JRIjcXz8.JdfbL

If you use extensions (Firefox/Tools > Add-ons > Extensions) that can block content (e.g. Adblock Plus, NoScript, Flash Block, Ghostery) then make sure that such extensions aren't blocking content.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

• Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
• Do NOT click the Reset button on the Safe Mode start window

• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Thanks for all the helpful suggestions. The problem no longer seems to exist but i don't know what solved it.