Bug with aliases creation on users registration with similar latin and localized logins

When I create a user with localized login name 'галина' it's all ok with aliases. But when after that I create a user with latin login name 'galina' - aliases in the table url_alias looks like this:
(src field) user/3918 -(dst field) ~galina/user-0. (incorrect, should be ~galina-0/user)
(src field) blog/3918 -(dst field) ~galina-0 (correct)
(src field) blog/3918/feed -(dst field) ~galina-0/feed (correct)
Moreover, all aliases to blog posts in the url_alias looks like
galina/blog/232853 and unaccessible via url galina-0.example.com/blog/232853 (including from blog main page).
I have created two patches for subdomain module v. 6.x-1.7 (file subdomain.module) and pathauto module v. 6.x-1.5 (fille pathauto.inc). I'm very newbie to Drupal and it's, probably, not good solution, but it's work for me (I post patches here only to illustrate the problem).