Version: 1.13.2 (using 4.4.2 (KDE 4.4.2), Kubuntu packages) Compiler: cc OS: Linux (i686) release 2.6.32-22-generic-pae (1) Using 'System Setting|Regional & Language|Spell Checker' default language is set to English (Australia). (2) Open KWrite, make sure automatic spell checking is enabled. (3) Enter the phrase "What colour is that color?" (4) Open KMail, compose a new message, enter the phrase "What colour is that color?" (5) Notice that in KWrite that "COLOR" is the misspelling (correct) (6) Notice that in KMail that "COLOUR" is the misspelling (incorrect) Conclusion (without looking at source) is that incorrect dictionary selected for spelling (and no local setting in KMail - unlike KWrite - to change dictionary)
kmail doesn't use 'System Setting|Regional & Language|Spell Checker' it has it own settings.
Yes, it's a little better now in that you can actually change the spellchecker settings. It was totally broken for the KMail version I reported it on *two* years ago. I still don't think it's correct in that the KMail spell checker language does not seem to default to the system spell checker setting. For example: in my case, the system wide setting (via Locale/Spell Checker) is "English (Australia)" while the KMail default is "English (United States of America)". Changing this setting appears to only to "stick" for the current instance of the composer - make a new mail message, in the composer window go to the "Settings/Spellchecker" menu item, change the default language. Close the composer. Open a new composer. Open the spellchecker settings again. Note that the previous selection has not been kept, nor is it the system default.