Suexec - schoud work, but it doesnt...

Hi,

I have Apache2 installed on my Mandrake. When I try to run any perl
script I get an error 500: Premature end of script headers: index.pl
in error.log

The program runs very well when executed from cmd, so I checked the
suexec log, and it prints out:

[2004-03-01 11:05:03]: uid: (172/apache) gid: (172/172) cmd: index.pl
[2004-03-01 11:05:03]: command not in docroot
(/home/httpd/public_html/wt/cgi-bin/index.pl)

or the same error for other file:

[2004-03-01 11:09:09]: uid: (172/apache) gid: (172/172) cmd: test.cgi
[2004-03-01 11:09:09]: command not in docroot
(/home/httpd/public_html/cgi-bin/test.cgi)

now, lets see how my suexec was configured:
[root@wiretech apache2-2.0.44]# suexec -V
-D AP_DOC_ROOT="/home/httpd/public_html"
-D AP_GID_MIN=100
-D AP_HTTPD_USER="apache"
-D AP_LOG_EXEC="/usr/local/apache2/logs/cgi.log"
-D AP_SAFE_PATH="/usr/local/bin:/usr/bin:/bin"
-D AP_UID_MIN=100
-D AP_USERDIR_SUFFIX="public_html"

The same path in httpd2.conf: DocumentRoot /home/httpd/public_html
Eeach script has been chmod 755 and chowned, chgrped to apache (uid
172, gid 172).

I still cannot understand why it isnt working. Anyone ccould help me,
please?

Regards, K