^ Guys, just an update. Been doing a bit of stress testing since Monday regarding the sudden exit to home "Reading"/"No Disc" problem of my HT805, as also experienced by some owners here. Am an original copy DVD user ever since that's why this really bothered me. Anyway, the error was consistent last monday with 3 DVD movies before I get to finish one full-run movie afterwards, which I called up for LG home service scheduled for today. But since yesterday, I'm not encountering them anymore. Been testing a number of movies, a couple even being p*rated and CD-R burned, but didn't encounter it anymore. Up to now, been running a couple more movies and I didn't get the error anymore. Since I have nothing to show for and the problem was still inconsistent, I called up LG to cancel/hold service for now.
If it helps, after running a movie from start to finish the first time after the problems I changed some settings at the Home menu. I turned DRC and Semi Karaoke to OFF (I guessed this was a scoring mechanism after the end of each chapters for Karaoke DVDs) since there was no use for this and might have affected during end of chapters (as defined in the manual for Karaoke DVDs at least). Anyway guys, will keep this thread posted if the problem comes back and becomes consistent before calling a LG service rep again.
How about the other owners who have this, still having problems? or experienced the same error for the first time but not always?