This happens when using the etch_d-i netinst CD. The display is broken in 2nd stage when using Arabic as installation language. The dialog windows have misaligned borders as it may seen on the screenshot available at http://www.perrier.eu.org/~bubulle/d-i_2nd_arabic.png Eugenyi, I suspect this comes from a broken newt/slang/whatever in testing, do you confirm?