Adding taxonomy translation logs user off

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Install WPML
2. Go to Posts->Categories
3. Modify a category without translation
4. In the language panel, click Add.

What is the expected output? What do you see instead?
Should add a category, ends up logged off at wp-login.php

What version of WPML and WordPress are you using? Can you also specify PHP
and MySQL versions?

WPML 2.5.2
WP 3.4.1
PHP 5.3.14
MySQL 5.1.62 

Original issue reported on code.google.com by sa...@zotikcoiffure.com on 17 Aug 2012 at 1:32