Are the diffs between both releases too much to provide
an upgrade file (how many MBs)?
I've got three machines running 2.1.5R and I have a tape with 2.1.6R on
it. Is it worth upgrading these systems to 2.1.6R? What's the best /
easiest way to do so? Should I run the 2.1.6R installation and let it
do an upgrade? Should I do a fresh install on one machine and then copy
the source tree to the other two machines?