htaccess and mod rewrite in Version 0.08093 / #7170

After upgrading from version 083 I can not login anymore.
The update process run well and I got the message that everything is fine. After I hit the submit button on the login page I get a 404 error with "The requested URL /project3/submit was not found on this server.".

My server runs by default a php4 so I had to include the lines
"Action php /cgi-php5/php
AddHandler php5 .php"
to the htaccess.

As I run Apache 1.3.36 I have deleted the rest of the htaccess as mentioned in the installation manual here on the streber-pm.org.

I also set the customize.pphp.inc to be
confChange('LOG_LEVEL', LOG_MESSAGE_ALL);
confChange('DISPLAY_ERROR_LIST', 'DETAILS');
#confChange('CHECK_IP_ADDRESS', false);
confChange('USE_MOD_REWRITE', true);
#confChange('LINK_STAR_LIGHT', true);
#syntaxhighlighting for Gheckobased browsers

### uncomment the following line if you upgraded from mySQL 4
#confChange('DB_USE_UTF8_ENCODING',true);

#confChange('EMAIL_ADMINISTRATOR','mail.somedomain.de');
#confChange('SMTP','mail.yourdomain.de');

I think I did something wrong.
Any clues???

gb5256