KiLo: Yes, I was testing the global ban system. I didn't realize anybody had build 17 servers up. I've stopped testing now, so you should be ok.
You got b.17?Because your server is the only one I know that allows b.17 only.
It's not an 'official' build yet, you shouldn't really use it. :|
Pretty sure he just means servers shouldn't be running it yet since it's so unstable/being tested, not that people shouldn't be using it.