Why do you think, that php_gettext.dll is loaded?
What does get_extension_funcs('gettext'); say?

I've used the following script:

<?php
echo '<pre>';
print_r(get_loaded_extensions());
echo '</pre>';
echo '<br />------------------<br />';
echo '<pre>';
print_r(get_extension_funcs('gettext'));
echo '</pre>';
?>

This is the result of the script:

Array
(
    [0] => bcmath
    [1] => calendar
    [2] => com_dotnet
    [3] => ctype
    [4] => ftp
    [5] => iconv
    [6] => libxml
    [7] => odbc
    [8] => pcre
    [9] => session
    [10] => SPL
    [11] => SQLite
    [12] => standard
    [13] => tokenizer
    [14] => zlib
    [15] => dom
    [16] => SimpleXML
    [17] => wddx
    [18] => xml
    [19] => apache2handler
    [20] => gd
    [21] => gettext
    [22] => ming
    [23] => mssql
    [24] => mysql
    [25] => openssl
    [26] => pdf
    [27] => xsl
    [28] => zip
    [29] => Zend Optimizer
)

------------------


Array
(
    [0] => libintl_textdomain
    [1] => libintl_gettext
    [2] => _
    [3] => libintl_dgettext
    [4] => libintl_dcgettext
    [5] => libintl_bindtextdomain
    [6] => libintl_ngettext
    [7] => libintl_dngettext
    [8] => libintl_bind_textdomain_codeset
)

It seems that there is something wrong with the names of functions.

This bug has been fixed in CVS.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
Thank you for the report, and for helping us make PHP better.