My 24" Dell LCD has been connected to my Mini for a month or so (and was connected frequently to my macbook before that) with no issue. Over the last couple of days however, I've started to notice a light flicker. It looks like a refresh rate issue, however I haven't changed any settings so I'm a little unsure of why it would have started all of a sudden, unless the monitor is getting ready to crap out on me. The only available refresh rate in the display settings is 60hz. Does anyone know of a cure or a hack to try upping the refresh rate? I'd rather not have to deal with the hassle of sending this thing in (the box is huge).