I just installed and configured a new Ubuntu 14.04 Droplet and did a custom Wordpress install. Now when I try to submit any forms, such as logging in or even setting up Wordpress, then it hangs and the browser.

In Chrome it says : "No data received"
In Firefox it says: "The connection was reset"

This must be an issue with the VPS configuration, as I'm able to run an instance of the same file structure and Wordpress configuration on a Debian Droplet and on my localhost with MAMP.

What's the problem here? Is it with PHP or Apache? I tried copying over my php.ini file from the Debian droplet temporarily and restarting, but that didn't fix it.

It seems like some kind of timeout issue.