using npc buffs on pet(at least on great wolf), in the following order, disconnects you 100% of the time(tested 5 times):
windwalk - zerk - shield - guidance - mental shield - vamp - might - bless body - mag. barrier - haste - focus - resist shock
I will test
If you click really fast on NPCs you always have DC anyway like on exchanging items on npc even when u are trading with someone if u click really fast on items
It will be fixed in the next update. (Coming this week)