From Bugzilla Helper: User-Agent: Mozilla/4.77 [es] (X11; U; Linux 2.4.3-5 i686) Description of problem: from: http://www.ufaq.org/commonly/splchk_langs.html you can download spell files (to put into /usr/lib/netscape/spell).
Looking at the copyright on those files, I'm not sure they are freely redistributable under a license we can use.