Comment 3 for bug 215651

This is an issue with Ubuntu 8.04 LTS,

root@bastian:~# ls /usr/local/bin/dot
ls: cannot access /usr/local/bin/dot: No such file or directory
root@bastian:~# ls /usr/bin/dot
/usr/bin/dot

root@bastian:~# lsb_release -rd
Description: Ubuntu 8.04.2
Release: 8.04

root@bastian:~# apt-cache policy ntop
ntop:
  Installed: 3:3.2-10.1
  Candidate: 3:3.2-10.1
  Version table:
 *** 3:3.2-10.1 0
        500 http://es.archive.ubuntu.com hardy/universe Packages
        100 /var/lib/dpkg/status

root@bastian:~# apt-cache policy $(dpkg -S /usr/bin/dot | awk -F: '{print $1}')
graphviz:
  Installed: 2.16-3ubuntu2
  Candidate: 2.16-3ubuntu2
  Version table:
 *** 2.16-3ubuntu2 0
        500 http://es.archive.ubuntu.com hardy/main Packages
        100 /var/lib/dpkg/status

In later releases it seems to be fixed (Intrepid changelog):

root@ulises:~# gunzip -c /usr/share/doc/ntop/changelog.Debian.gz | grep -B 15 -A 5 "dot path"

ntop (3:3.3-1) experimental; urgency=low

  * New upstream release, closes: #428276, #420633.
    Requires libpcap0.8-dev or later to build.
    This version have improved load and crash handling,
    closes: #420633, #368680, #462406.
    Updated rpath handling, closes: #399581.
  * Removed --skip-version-check from init script as that do not work in
    version 3.3.
  * Make sure that empty /usr/lib/plugins is not installed, closes: #369554.
  * Now ldconfig is run in postinst and postrm.
  * reload option now return error 3 to be LSB compliant, closes: #374703.
  * Added LSB dependency in init script, closes: #460225. Thanks to
    Petter Reinholdtsen for the fix.
  * Correction of bin/dot path, closes: #415035.
  * Suggests gsfonts package, closes: #449505.

 -- Ola Lundqvist <email address hidden> Fri, 7 Dec 2007 07:30:02 +0100

As you can see it had been fixed upstream in bug #415035

In my opinion this fix should be backported to 8.04 LTS