I heard about there happens a funny amusing interaction between Aerie and Korgan also Keldorn & Viconia (they kill each other) in how many days that things happen? I had aerie in my party just to see it does it happens in 7 days or longer?

I think it depends on a few things, dunno which though ...
All i know is that Viconia and Keldorn ALLMOST fought, while in the underdark, where in other games by other people, they do fight.
So its probably charisma-reputation related or something ..

Minsc and Edwin will also eventually try to kill each other over Dynaheir..

There is also a quest involving Edwin where pretty much all of the other NPCs have a good laugh at him......You have to use Edwin at least once just to experience it!! Definitely the funniest thing I've ever seen in a computer game!

Yeah I couldn't belive it Viconia and keldorn went at it in one of my games in the middle of the hall of the most radiant heart and vicky won and the paladins didn't do squat ? lol I found that both funny and desterbing lol.

Minsc and Jan can also end up in a fight.

if anomen fails his quest to become a knight, then anomen and keldorn will start killing each other.

anomen and aerie will also fight each other(but you can stop them). damn annoying that anomen is if he fails his quest.

minsc - jan

Aerie - Anomen

Keldorn - Anomen

Edwin - All ( No Fighting )

jan - If you want to have a laugh

The Aerie vs Korgan takes 20 days of game time.

At that point, Aerie will give your PC one day to get rid of Korgan - or she will leave.

If you DON'T get rid of Korgan by the next day, he will gleefully point out that he's still in the party, at which point Aerie will leave.