During setup of self hosted, there are a couple times where the system appears to "hang" because it is processing data (e.g. creating db, restoring content, etc.). This is normally not an issue.. just sit it out and wait. We know it's processing. The issue comes into play when you use a proxy in front of it such as nginx. nginx views that as a timeout with default settings. This timeout breaks the process in the middle of it and corrupts the install. A simple fix would be to not use nginx, but I like using https when sending my password for my database over the internet and I don't like opening up non-web ports on my firewall. Additionally.. you could also be like me and have it take 4 hours for you to realize it's not a you problem, but rather a configuration problem. I view this as a bug, but you might consider it a feature request.. I'll leave that up to you.. but you should really treat the process differently than you are and just have the page dynamically update with the progress instead of just letting it "process" in a way that something can view as the web page going unresponsive.

Steps to reproduce:
1. install/set up nginx as proxy for confluence port
2. install confluence
3. configure confluence
4. wait for timeout and refresh.. you'll get a 500 stack trace of a java thread