I registered for this one, then I couldn't find it again because the links took me to the old one as well. I couldn't figure out why it wouldn't let me log in! Ss I registered over there, thinking it was the location and the old posts had been reloaded there. It Let me register and log in with IE, but with Firefox it said I didn't exist!
Looks to me like the forum link on some of the pages just hasn't been updated. Refreshing does not help. (And in my case my browser should be emptying the cache on exit anyways.) The A page as well as the Effects through Updates pages all link to the new forums. Fake Planes doesn't have a forum link. (or Home, FAQ, EULA, etc.) All the letters I've tried, B-Z, link to the old forum. Individual airline pages also seem to have the old forum link.
I can switch between pages with the new forum link and pages with the old forum link consistantly, and all show up as being hosted on Simviation. These are pages on the new site, not the old site, because the L page has the Laker and Lanica listed while the old L page (opened in another window) does not.