Had my first experience with some noise on my 722. It was indoors, so I don't think it can be blamed on heat. It happened mostly during middle of one track, isolated to about 3 seconds during that track and I guess it could be classified as digi-noise, whatever that is. Also happened during opening act. Closing act was fine. Could this have been cell phone noise? Something else? Anything that can be done to prevent it from happening again? Sorry for not being more specific, but ask away, maybe I can pin it down a little better.