[SGVLUG] Any "movable type" gurus out there?

[Emerson, Tom (*IC)]

I was just dusting off my cob-web-log and noticed I'm running version 3.2 of movable type, and apparently version 5 has recently been released - any thoughts or recommendations on installing or upgrading (perhaps running in parallel?)  I realize this isn't strictly a "linux" topic, other than this runs "best" on an apache server :) so at least it is an open source topic.

My actual "blog" is, as I said, has always been a bit of a cobweb factory, so if I "lose" some or all of the articles during an upgrade, it won't be a huge loss (annoying, but not a "loss")