IMAP Error: Login failed for

[ugosweb]

Hi,
I just installed the latest version of roundcube on my Ubuntu 10.10
the installation went OK and the test page gives me OK on all items, also on IMAP server.
But when I login in roundcube I got "Invalid username or password".
In the log I see:

[12-Dec-2011 13:20:36 -0800]: IMAP Error: Login failed for xxx@xxx.net from xx.xx.xxx.xxx. AUTHENTICATE DIGEST-MD5: A0002 NO Authentication credentials invalid. in /opt/moodle-2.1.2-0/apache2/htdocs/roundcubemail/program/include/rcube_imap.php on line 205 (POST /roundcubemail/?_task=login&_action=login)

what was wrong?

Ugo