Advanced Output forgets screen setting

[HerrNieDa]

had some problems last time with multiscreen setups (r3.32, maybe in 3.31 it was not)...
one of the screens won't remember it's size and resets to a former value (maybe the values from the composition files)

using Win7, GTX285, Geforce 9600GT, 9500, Matrox TH Digital, AVerMedia CaptureHD, AMD 790 chipset, Akai MPD 24.

i'll try to reproduce it next time i get the chance and will try 3.31 too, it happened 2 evenings the last month with a 6/7 multiscreen setup.