I’m used to having spell as you type provided by Firefox. It’s had it since Firefox 2.0- and because of that, I’ve never used the Spell Check built into WordPress.
Well, I’ve noticed that while Firefox’s spell check works fine in Gmail and on other websites, it’s not working in WordPress 2.5.1. I’m going to check it out on a few other machines, but on my MacBook running 10.5.3, I have to manually check spelling with the WordPress spell check when I’m posting.
This will take some getting used to.
If you are also having the same problem with Firefox 3 not spellchecking in WordPress- please leave a comment with your version of WordPress and your operating system. It will help me gather info for a bug report.