Hi all. I have an LG42LE5900 TV which I am very happy with. It is connected to a LG HT805SH DVD/Home theatre unit. My connections: - Virgin box via HDMI into TV - DVD player/home theatre (LG as above) connected via HDMI to TV - xbox 360 connected via HDMI to TV Optical audio from TV into the LG home theatre unit. Sporadically I find I lose all sound for a second or so. Sometimes several times an hour, sometimes it wont happen at all for hours. Sound can be lost whether using xbox or virgin TV box. I've not noticed it when watching DVDs but that's only 90 minutes at a time so it may be that the problem isn't there, it may be that it only happens after a period of time and the DVDs aren't long enough. At first I thought it was an issue with the Virgin box, but that's been replaced and the fact I see the problem when using the xbox rules that out. Which means it is either the TV decoding the sound that has problems, the cable connecting TV to audio or the audio unit. I'd imagine an optical cable would work or wouldn't and not have intermittent issues like this so I'm ruling that out. Any idea of any compatibility issues between these units? Any suggestions of setting to try tweaking? I think I've tried them all over last couple of months but happy to try more! It has been suggested that it could be when sound peaks that part of the setup can't cope, assuming that would be the audio unit as it's older than the TV. Does that sound plausible.