The 'hosting setup' command you ran during Aegir installation
attempted to install a cron job which processes the tasks in Aegir's
task queue every minute. If you would prefer to run this command
manually here's how:
# replace /path/to/php with appropriate path
# e.g. /usr/bin/php
# replace /path/to/drush.php with appropriate path
# e.g. /usr/local/sbin/drush/drush.php
# replace /path/to/aegir/drupal with appropriate path
# e.g. /var/aegir/drupal-5.x
cd /path/to/aegir/drupal; /path/to/php '/path/to/drush.php' hosting dispatch --root= '/path/to/aegir/drupal'