Major upgrade

[Steffen Vorrix]

I have been tracking this list for about 3 or 4 weeks now, and I have learned alot more about FreeBSD then I thought I might.  I have successfully upgrade my two home FreeBSD machines from 4.2 REL to the current stable version, and everything went just fine.  However, I now need to upgrade 2 production machines for my employer, and these have to go as painlessly as possible.  The problem is that these machines are 3.4 REL.  I have looked through the mail over the past weeks, and I have found people mention that 3.4 to 4 can have some gotcha's associated with it, but I haven't seen anything specifically mentioned.  Are there things that I need to watch out for?  The reference that I am referring to was a thread regarding remotely updating servers.  While this was frowned upon by almost everyone in the list, one person specifically mentioned that remote updating would be a problem from a 3.x to a 4.x.  I don't plan to do any remote updating, but I want to be sure there aren't other things I need to watch out for.   Thanks a bunch.   Chris Schremser