Since it is inefficient for GMs and RCs to wait 5 minutes for each AFK, the time will be decreased to 15 seconds before the punishment. However, if you mail the GM or RC who gave you the punishment within 5 minutes of the punishment, it will be dissolved.
Will you disconnect and ban someone if they do not reply within 15 seconds? Personally I play 2 chars at the same time and if I'm on 1 char, it's hard to tab to the second char without dying and it may take more than 15 seconds to move the char I'm controlling to a safe place to tab into the second char.
If you disconnect and ban someone after 15 seconds, how can we contact the GM/RC that gave the punishment if the account is banned and we can't relog?
What about the players who are not aware of this change in rules? Not everyone reads the forums every single day and there was no "rules updated" or "last update April 12, 2010" post on the in game rules post so most players wouldn't know about this update in rule.
What about players of different languages? The rules aren't translated to multiple languages so a rule like this where they're only given 15 seconds to reply may catch then unaware.