<span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">In /var/log/auth.log I get:</span><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">

<br></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><br></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">

<span style="color:rgb(68,68,68);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:11px;line-height:13px;background-color:rgb(250,250,250)">unix_chkpwd: check pass; user unknown </span><br style="color:rgb(68,68,68);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:11px;line-height:13px">

<span style="color:rgb(68,68,68);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:11px;line-height:13px;background-color:rgb(250,250,250)">unix_chkpwd: check pass; user unknown </span><br style="color:rgb(68,68,68);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:11px;line-height:13px">

<span style="color:rgb(68,68,68);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:11px;line-height:13px;background-color:rgb(250,250,250)">unix_chkpwd: password check failed for user (root) </span><br style="color:rgb(68,68,68);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:11px;line-height:13px">

<span style="color:rgb(68,68,68);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:11px;line-height:13px;background-color:rgb(250,250,250)">su: pam_unix(su:auth): authentication failure; logname=bla uid=1000 euid=1000 tty=/dev/tty3 ruser=bla rhost= user=root </span><br style="color:rgb(68,68,68);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:11px;line-height:13px">

<span style="color:rgb(68,68,68);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:11px;line-height:13px;background-color:rgb(250,250,250)">su: pam_authenticate: Authentication failure </span><br style="color:rgb(68,68,68);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:11px;line-height:13px">

<span style="color:rgb(68,68,68);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:11px;line-height:13px;background-color:rgb(250,250,250)">su: FAILED su for root by logname </span><br style="color:rgb(68,68,68);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:11px;line-height:13px">

<span style="color:rgb(68,68,68);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:11px;line-height:13px;background-color:rgb(250,250,250)">su: - /dev/tty3 logname:root </span></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">

<span style="color:rgb(68,68,68);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:11px;line-height:13px;background-color:rgb(250,250,250)"><br></span></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">

<span style="color:rgb(68,68,68);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:11px;line-height:13px;background-color:rgb(250,250,250)">Regards,</span></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">

<span style="color:rgb(68,68,68);font-family:Verdana,Arial,Helvetica,sans-serif;font-size:11px;line-height:13px;background-color:rgb(250,250,250)">Olivia</span></div><br><div class="gmail_quote">2012/7/5 Denny Schierz <span dir="ltr"><<a href="mailto:linuxmail@4lin.net" target="_blank">linuxmail@4lin.net</a>></span><br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
Am 05.07.2012 um 11:30 schrieb Katarzyna Myrek:<br>
<div class="im"><br>
> But they didn't help...<br>
<br>
</div>looks for me like a PAM problem. Take a look into /var/log/auth.log also (for sudo) in /etc/sudoers<br>
<br>
cu denny</blockquote></div><br>