Jonathan Dowland wrote: > however, someone upgrading > from such a long release ago is not something that will have been > thoroughly tested and it's quite possible that an old init script that > was modified (and therefore won't be replaced by package upgrades) could > come along for the ride and cause problems.
The release and upgrade notes are sufficient they state upgrade to next release and then to next release. I had few problems from wheezy to lenny, but almost no problem from lenny to stretch. Just follow the upgrade instructions for each release going to the next