Login failed suddenly

[web4you]

I am using RC for a week, and suddenly login failed for all users.
Any help?

[bpat1434]

Error log?

[web4you]

Nothing in error log. All accounts work normally with cpanel default Roundcube. (I am a hosting reseller so I can use default installation but I prefer my own)

I made a new database and import users from an old database. Then I changed config file to point to new database. It worked for a couple of hours than all logins failed.

Sometimes I can login, and sometimes not. Nothing in error log.

[bpat1434]

Turn the error level in Roundcube up. Then try and login and post what happens (including any information on the screen).

[web4you]

Turn the error level in Roundcube up.

I am not sure what it means.

Still the same, I need to drop all tables in database and to import EXACTLY the same database in order to login. Strange, and it only works for an hour. After that I am getting Login failed.

[bpat1434]

In the roundcube /config/main.inc.php file the top setting is the roundcube error level. It's a number from 0 to 8. Set it to 8 and look at what displays.

[web4you]

It was something with a translation. I removed an old translation files and made my own using OpenOffice in Linux to avoid Windows encoding. It is working like a charm. Thank you for your time