Sebastian, you nailed it! It appears there is a major problem installing 5v2 if there is no Internet connection. We have 2 CAS/HT and 2 MB-DAG servers. The CAS/HT upgraded in less than 30 minutes. The first MB server took over 5 hours. We are planning to do the second MB tonight because at 5 hours we completely blew our maintenance window.
What we are noticing is that the CAS/HT servers have a direct Internet connection and the MB servers do not. They have to route through the barracuda as a smart host. That would indicate that Sebastian is exactly correct when he says that the 5v2 rollup requires an active Internet connection to be available or you're going to spend hours and hours installing the update.
So, my question to Microsoft is, do all rolllups and SP's require that all servers have direct Internet connections in order to install correctly now? Also we're seeing the 4v2 rollup appears now, but have told it to be ignored. I can see that causing confusion as well.
Does anyone actually test these updates before posting them to the Internet? You'd think after the "v2" release things would be working right, but there still seem to be bugs and problems.