I use xOP, my server knows only two registered users: me and my eggdrop. While I have deactivated AOP for me (/msg nickserv set autoop off), the eggdrop is on the VOP list. I have two registered channels, one with +n-modelock, the other one with +nt-modelock. If the channels are empty (usually the bot is there), the first user gets +o.
I have reproduced this problem by registering a new channel. Although NickServ should _not_ op me, I get +o, when I join #test.
My two servers run Gentoo Linux, which provides Anope only up to version 1.8.4 at the moment.
Best regards,
Jimini