[wp-hackers] Cyrillic slugs in pages

[b2]

Hi , i have problems with cyrillic slugs in WordPress 3.2.1 , problem is
when url is copied to aim , or skype or posted into link , wordpress
gives 404 not found , when link is inside wordpres - menu or in post or
page - it is ok. categories and posts are working just fine when url is
pasted like external link . my permalinks structure is - /%category%/%
postname%/ but , from what i know it is only for posts and not pages , i
use nested pages structure , so some of my pages slugs looks like : 
http://example.com/страница/страница2/страница3/

any ideas how to fix that ? 
thanks in advance.