An issue making its rounds around the web recently is a vulnerability called 'Shellshock' which allows anything that executes server commands to potentially take over the system. I do not believe anything on PureZC was open to any such a vulnerability, but in order to be proactive and stay safe, I updated the server to ensure that we wouldn't be open to this vulnerability either now or some time in the future. You can read more about the vulnerability here.
Unfortunately, some of these updates took a bit longer than anticipated, and there were a couple adverse side effects that took me a bit to figure out. So, if anyone noticed that we were down for a period earlier, then that is why. Sorry about the inconvenience. We should be good now, though.