After updating apache from debian repos have 500 internal error on cgi scripts and 'command not in docroot' in suexec logs. Here is my way to slove the problem.
Add the virtualmin source to the /etc/apt/sources.list
pico /etc/apt/sources.list
deb http://software.virtualmin.com/gpl/debian/ virtualmin-etch main
Don't forget to import gpg key:
wget --quiet http://software.virtualmin.com/lib/RPM-GPG-KEY-virtualmin
apt-key add RPM-GPG-KEY-virtualmin
wget --quiet http://software.virtualmin.com/lib/RPM-GPG-KEY-webmin
apt-key add RPM-GPG-KEY-webmin
Update package list
apt-get update
Then install apache build with suexec docroot set to /home
apt-get -t virtualmin-etch install apache2
Finaly, check the docroot
/usr/lib/apache2/suexec -V
Sorry for my english, hope the topic useful ;)