You can check the network.http.* prefs on the about:config page and reset all bold user set network.http prefs to the default value via the right-click context menu -> Reset.

• http://kb.mozillazine.org/about:config

Check at least:

• network.http.accept-encoding: gzip,deflate

Thankyou very much!

I searched network.http.accept in the top search bar

and found "network.http.accept-encoding: gzip,deflate "

then did right click > reset

For anyone else who comes across this problem ^^^

Thankyouuu!

Firefox (after closing and reloading) still gives me the same problem again with the symbols.

Any ideas?

See this if resetting the pref doesn't last.

• http://kb.mozillazine.org/Preferences_not_saved
• https://support.mozilla.org/kb/Preferences+are+not+saved

Thankyou so much!

Such quick response too.

FireFox really is the best :)

You're welcome

Glad you fixed the preference problem this time.

Hey, thanx it did fix it BUT - the next day I opned firefox at a google website and... same thing :( Any idea on how to sort that out?

Cheers

This fix my problem BUT next time I open firefox it goes back to the same error.... the changes I do in about:config don't stay... Any ideas for me?

If you do not keep changes after a restart then see:

• http://kb.mozillazine.org/Preferences_not_saved
• https://support.mozilla.org/kb/Preferences+are+not+saved