I know lots of posts here have dealt with receiver shutdown ('cause I searched for 'em ), but last night my Pioneer VSX-409 receiver/amp shutdown while playing the DTS track for Lost in Translation. This has happened before, but usually just will plain ol' 5.1 Dolby. What I did was turn off the surround, and just listened to stereo. This worked (as it had before), but my question is does the demand that playing surround place on an amp stress it so bad it generates more than usual heat? I guess it must, but how to overcome this? I'll try the usual suggestions (set speakers to small, check wiring for shorts, etc.) but I just wondered if anyone had any other ideas. Thanks. --- edit --- FWIW, this amp (when in surround mode) is powering 2 Polk RT1000i's, a center, and two bookshelf rears, no sub.