User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.8.1b2) Gecko/20060821 Firefox/2.0b2 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.8.1b2) Gecko/20060821 Firefox/2.0b2 I have selected "Check my spelling as I type", but I do not get any spell checking functionality. This has never worked on my PC with either of the betas. However, the functionality does appear to work on my work laptop (Win2k3) in the nightly bon echo builds. Reproducible: Always Steps to Reproduce: 1. Install the beta 2. Make sure that the option to spell check is enabled Actual Results: Spell checking doesn't work Expected Results: Red underlines under mis-spelt words in text area elements of forms

The en-GB locale doesn't ship a dictionary because of licensing issues (see bug 321742 for background), and this is release noted at http://www.mozilla.org/projects/bonecho/releases/2.0b2.html#issues Eventually the dictionaries will be packaged correctly and available on add-ons.mozilla.org, but in the meantime you have to work around by installing the dict from http://www.mozilla.com/thunderbird/dictionaries.html and then move the files from <app_dir>\components\myspell to <app_dir>\dictionaries. Right click on a text box and use the languages popout to select en-GB. Most likely spell check works in your nightly because you are using the en-US locale, which does include a dictionary. *** This bug has been marked as a duplicate of 343076 ***