ThemeCheck Problem

ThemeCheck says:
“WARNING: Found a translation function that is missing a text-domain. Function __, with the arguments ‘mytheme'”

But there are no __() functions missing text-domain ‘mytheme’ which has an argument ‘mytheme’. Yes, I have two __(‘mytheme’, ‘mytheme’) functions but it’s no problem.

And the second problem is following:

INFO: More than one text-domain is being used in this theme. This means the theme will not be compatible with ww.wp.xz.cn language packs.
The domains found are bbpress, mytheme

But there is no text-domain ‘bbpress’ as I had replaced all the ‘bbpress’ domain into ‘mytheme’. And I have searched for all the theme files on the server by Windows Grep(which is the best tool I have seen), but there’s no ‘bbpress’ domain in my theme folder.

Anybody has experienced the situation like this?
Why and how could this happen? Please help me.