[Typo3-linux] BE login problem

[Patrick S.]

 Hi :-)

after installing the dummy zip package, the BE login seem not to work.

admin/password reuslts in "Your login attempt did not succeed. Make sure to
spell your username and password correctly, including upper/lowercase
characters."
the syslog entry inthe mysql table looks like:
Login-attempt from %s (%s), username '%s', password not accepted!

system:
debian 3.1
php5, apache2 and mysql 4.1
phpsuexec is enabled, but there are no unusual messages in any log files


creating an extra admin user within the installer results in teh same 
problem :-(



is there any way to get debug infos out of the login process?