In visual studio 2010 Silverligh XAML designer is visible by default. For me it is totally useless and only require additional machine resources.
First of all I'd like to remark that I'm not following PoEA Repository pattern. I just like this name! =)
Today I found out why all pop ups in our project works so slowly (As an example you can check datepicker on this page http://househotel74.ru/#/Booking).