WordPress MU

Hello everyone,
there is a plenty of threads with localization issues but I'm really in stuck.
I need cs_CZ localization.
So I had made .po file from sources with POEdit, made changes, saved cs_CZ.mo file into the directory wp-includes/languages/ and changed wp-config.php. But it was still in English.
So I had started with debug and I discovered the following:
I updated file wp-includes/l10n.php and substituted code on row 5 like this:
Orig: if (isset($locale))
New: if (!empty($locale))
And now is localization working. But I don't think this is a right solution.
Does anyone have some similar experience or am I doing something wrong?

I think you should stick it into "wp-content/languages". It is different form WP singleuser.

Hi,

Just wanto to bring this to the top again.. I had the same problem and the same solutions...

Is it a bug in the core? I dont like the idea of having to hack the core files...

Leo,,

i have the same problem , wp-includes/l10n.php

function get_locale() {
//if (isset($locale)) //not work

if (!empty($locale))// works
return apply_filters( 'locale', $locale );

.
.
.
.

}

Ive added this on the trac as a bug. There is one guy looking at it..

http://trac.mu.wordpress.org/ticket/655

Leo,,