There was never many arguements in the big brother house.
Big Brother 1 - Nasty Nick confrontation
Big Brother 2 - No notable arguements that i can remember.
Big Brother 3 - I can remember Adele going mad at somebody and a few jade moments, big nothing major.
Big Brother 4 - Can't remember any?!
Big Brother 5 - Obviously Fight Night, Ahmed's tantrums (plates) and Kitten's Arguements.
Big Brother 6 - Alot!!! From Science to Roberto.. everyone was at each others throat at some point.
Big Brother 7 -

You know whats happend..
It's grown in the last three series, and i can only see it getting worse with the mix of people they keep putting in!