I was referring to your problems staying logged in.
Tony is going to look into the missing post thing, but it sounds like the problem is with your browser.
The header of every page served here contains a "no cache" header, which instructs your browser to reload the page each time you revisit it, rather than caching it. If you are having to force a refresh to view an updated post, its because for whatever reason your browser isn't paying attention to those nocache headers.
Now its possible that the new server has something to do with this, but im sort of leaning towards it either being your browser, or a bug in our software.
The way the "pool" works, is basically this. When you attempt to go to the website, your computer resolves the ip address of pbnation or www.pbnation.com
and gets one of 2 ips, which are randomly distributed.
The time to live on that lookup is set to 1200 seconds, after which time your DNS server will attempt to re-dns the domain, at which time it MAY get the "other" ip. The thing that makes me willing to say its not the round robin dns, is that if your nameserver is caching our IP, you should only be using one of the two webservers.
Try emptying your cache, logging out, and then visiting the site by either www1.pbnation.com or www2.pbnation.com, which should limit you to one or the other of webservers.
As for the missing posts, its not actually "missing", its just not being displayed because of your browser cache.
Whether theres 1 or 500 webservers running the vbulletin software, theres only one database server, so its not a matter of the data being lost. if you post, it made its way in there (or at least into the backlog of sql queries waiting to be executed).