Just like anything, going flatting with your mates has a honeymoon period. Once that is over is the time a lot of people start to vent their frustrations about what they were happy to deal with until now.
Issues such as someone not wanting to be involved in the communal cooking, Jimmy''s socks smelling out the house, or everyone getting annoyed with Sam for not cleaning up after himself. When the honeymoon period ends, be prepared for it. Not everyone shares the same habits as you and is not as forgiving as your mum was at home. And unlike your mum, too, they won''t be willing to clean up after you. You''re an adult now!