I can certainly back up your comment about 9 or 10 of them living in one house. I live in a block of flats and some Poles have been living in the flat diagonally up from me. The landlord insisted that there were only 3 females living in the house, yet we constantly saw different faces coming and going. I think the most we counted was 8, living in a 3 bed flat. My neighbour directly above me had to chase one of them out of her living room at 3am as they got drunk and broke in. He then tried to get in to each of the 4 other flats in our block on his way down the stairs. They (thankfully) moved out last week. For only having "3 females" living in the flat, I couldn't understand why 4 double beds were moved out of the flat.
However, I do not agree in tarring all of them with the same brush. The last place I worked had loads of Poles. Many of which I got on really well with. After telling them about the above incident, they were horrified by the behaviour and were apologising profusely even though they didn't know these people. I think it's the same where ever you go. There are always a few who let the whole side down. :007: