Bought my first plasma three weeks ago (Panasonic 50 inch PZ750) and have kept the settings the same as out of the box. Not knowing until know that I could do damage, the Picture/Contrast has been set at + 30 for the first 100 hours. Have I made a big booboo? Any suggestions for picture settings in a somewhat dark room?

I know it's a really long thread..but there is ton of info about your set here: http://www.avsforum.com/avs-vb/showthread.php?t=843093