Hi everybody...
I`m new to maya and trying to render an interior scene. im using a physicalsky & a sun, and also a portal light linked to an area light just behind the window...
the problem is that, as seen here, there are some noises and dark points appeared in the scene:

turning on FG with 3 bounces and GI does'nt help, neither:


its clear to me that the problem is caused by the portal light itself. but I dont know how to fix it.
I'll be glad if someone helps...

(I use a MAYA 09)

Increase the samples on the area light.