Spell check.. again

Dear all,

I was trying for some time to solve an issue with the spell checking while 
using more than one language.  

I use primarily three languages while mailing: English, French and Bulgarian 
(with Cyrillic letters).  I followed this advice 

(http://soft.zoneo.net/Linux/kmail_set_dictionary.php) 
which works perfectly well for the English and the French.  However, while 
choosing the Bulgarian, all my words become underlined with red (like a 
wrongly spelled ones).

I have the wbulgarian dictionary installed (for usr/share/dict), as the same 
for English and French.

What do I do wrong?
gk