Recently got a new mini to go with my Samsung Full HD HDTV, model LE40M86DB. Connected via an Xtreme Mac HDMI-DVI cable. However the max. resolution I can set is 1080i, or 1600x900. Tried resetting the NVRAM, played with switchresX etc, but I can't get the mini to output 1080p. This is really annoying, anyone had this problem before?