I too had severe sound issues with all of the commercials during the Super Bowl. I have DTV HD TiVo unit with an optical feed to my 990 for sound. The audio during commercials made them unwatchable. I spent all of my time jumping between audio formats trying to get one that would play properly. I have not had this at any other time while watching HD (or SD) material, or with the actual game itself, so my guess is that it has to have been with the way that CBS was handling the commercials. If I were a sponser who paid mega bucks to air a commercial during the game, I'd be asking for some of my money back. Nobody likes to pay for shoddy workmanship.
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HT: Outlaw 975/7125 | Sony 55" SXRD | Roku Ultra | Sony BDP-S790 | Mirage OMD-15 (fronts) and Prestige 4 + Center Channel | Outlaw LFM-2
LR: ARC Reference 1 | Emotiva XPR-2 | Music Hall MMF2.2 | Oppo BDP-83SE | Polk XRt12 XM Receiver | Emotiva XDA-1 DAC | Sony HAP-S1 (digital audio player) | Sansui TU-217 Tuner | Magnepan 3.6R w/Mye-Stands | SVS SB-16 sub | BA VR-M90s | Audio Quest 72db speaker cable
Office: Drobo 5N running as PLEX media server
Closet: too many pieces to put all into place, I need more rooms