If you are a Firefox user, you must have noticed that its in-line Spell Checker doesn't work in forms, text boxes, rich text editors, etc. You need to manually right-click in the box and enable "Spell check this field" option to check the spelling.
Here is a solution for this annoying problem:
1. Type about:config in Firefox addressbar and press Enter.

2. Now type layout.spell in Filter box.
3. You'll see layout.spellcheckDefault in result.
4. Double-click on it and change its value to 2
5. That's it. Now Firefox will check every textbox, etc in webpages.
This article was posted by VG in following section: Mozilla Firefox.
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vicky
I am using Firefox/3.0 with win XP. My in-line Spell Checker doesnt work at all. It used to in my Mac version, but not now, even though I tried all this.
VG
^^ I think no dictionary is installed in your Firefox. Right-click in any text box and click on "Add Dictionary" option. Then install "en-US" dictionary.
coldroll
Thanks VG you fixed my problem :)
banti
how can use and installed in your firefox. so please suggest and prosess also .
Eori
It keeps resetting the value to 1, is there any way to make sure it stays on 2? ^_^ please and thankyou <3
Sara
Thank you so much for this simple but extremely helpful tip!