help with locale

Dear all,

I've just successfully installed and configured version squirrelmail 1.4.18 but I've a curios problem and i need your help to solve it.

Config.php:
$squirrelmail_default_language = 'it_IT';
$default_charset       = 'utf-8';
$lossy_encoding        = true;

I've downloaded and installed all_locales-1.4.18-20090526.tar.gz and all seems works.

When I login to squirrel the default language (Italian) works but any click on right_frame change cyclically language to en_US <->  It_IT

Whit other language example fr_FR all works perfectly.

Any hint ?

Regards,
Matteo

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