Heh, I'm assuming you mean me. OOC bans, so I understand, are for things about cheating.
While I also disagree about the ability to pause and unpause so easily (I am actually surprised I was able to do it in such short time. Before it used to take a lot longer), in the end, what you have listed: ignoring you, pausing/unpausing as per the game allows it, changing realms, trying to take over a city, none of those are against the rules. Possibly not something that is good for the realm (Dude, I freaking hate Nothoi as should be clear anyway), also not anything wrong.
That all said, I do agree that the pausing mechanics should be looked into. But apart from that, try to handle this issue ICly instead of attempting an OOC ban out of possible player frustration. Believe me, I've had situations where I too wanted to OOC ban someone, but in the end, although it wasn't exactly the best of form, it wasn't wrong.
I am thinking more of something in the lines of " misbehaving as a player. This is a ban about player behaviour, not character behaviour." This is, at least for me, abuse of the game pause/unpause trait, taking advantage of game mechanics for personal gain.
I agree that pause/unpause are not ground for banishment, but such abuse of the game mechanics enters give grounds for it.
I just wish to clarify if this enters on the lines of " misbehaving as a player" or not.
