forum2 is/was a 'workaround' for anyone who has not picked up the change of IP address, either naturally or hasn't restarted their browser (windows remembers visited addresses for names for about 24 hours) and is still hitting the old machine when they type in the name. It should NOT be remembered, it is only a short-term address that will go away in a couple of days.
As far as I can tell from here, it is an improvement to overall speed at this point. I'm looking for feedback on that and anything else noticed (problems posting: pics attached and avatars have been noticed to be a problem during some previous upgrades) etc.
I'm holding on the forum software upgrade for now until we're good on this one. Right now, I could swap back to the other server in about an hour if necessary!