Quote - > Quote -

the problem is not fixed in the latest build.this is after 4 minutes. after 1 hour thee would be fireflies everywhere.

Are you using portals for the windows? 
Or have you tried to change the lighttype?

i am using portals on the windows. i changed the lighting and i changed the settings.
i will whait until we have the test scene where we will all use the same models and lighting. then we can compare.