I am experiencing occassional digital audio (DD or DTS) dropouts. Sometimes I watch an entire DVD with no dropouts. But other times there are a half dozen. It's very annoying to lose a second or two of dialogue several times in a movie. Previously I had a Toshiba 2108, which did have the firmware upgrade to fix the problem that player had with dropouts. I still suspected the Toshiba as the problem. But now I have a new Panasonic RP91 and it still happens. The receiver is a Sony 333ES, with coax digital connection. All equipment is plugged into a Monster brand home theater surge protector. Recently on a hot day I noticed an audio dropout each time the A/C compressor kicked on. Then my daughter turned on the exhaust fan in the nearby powder room and it happened again at that instant. So now I'm suspecting that the dropouts are happening as a result of electrical surges in the house wiring, even though the A/C has its own dedicated circuit separate from the home theater. I'm thinking that other dropouts may be occurring when (for example) the refrigerator compressor kicks on. Assuming my theory is correct, what's the solution? Should I just plug the receiver directly into the outlet, bypassing the surge protector? (Could the surge protector be causing this, even though power is maintained to the equipment?) I haven't tried this yet. I'd hate to lose protection to the receiver though. Do I need a power conditioner? I hate to spend hundreds on this but if its the only solution... Is this receiver maybe a little too sensitive to fluctuations in the power supply voltage? Has anyone else noted this behavior? Other thoughts?