WDTV Live grainy font

Hi, suddenly my wdtv live has started to display some fonts a little grainy, especially in the list view of video/file browser. It looks like it’s not that visible in subtitles. What can the problem be?

check your WDTV Resolution Settings

eg.     Setup > Audio/Video Output > Video Output > HDMI > 1080p 60Hz >    etc etc

Thanks, although I have never changed that setting which was on 480i 50Hz, I solved it by setting it to auto.