Re: register Page
if you are using your own theme, you are out of luck!
There are many, many many. post on this topic.
When you use your own theme, you will need to copy the register.php to your theme directory.
If you do so.. you we always get.. the login page.
If you are not copy the register.php to your theme directory, it will default to wp-signup.php.
it works fine, however, because it does not use buddypress-language file your site will have mix of English and your mother tounge language.
The best work around I come up with is… do not copy the register.php.
Translate the WPMU language into your language.
I believe, this is logged for bug fix.