psh, your boot install is better... thats about it i think STILL haven't met you...
but yeah, its a weird problem... if it is just popping back on instantly, then its either a loose wire or the amp is in protect, cause of a loose wire... Wish i could have a look at it, but im betting its one of those... dont think its your gear...
that ground running from the head unit you speak of is the remote wire for the amps... it tells them to turn and off... its a constant positive feed, dont know how strong, but if its exposed somewhere and hitting the body of the car, then it will turn the amps on and off intermittenly...
DECIM8: Im thinking about dropping 2k on subs this weekend... you STILL gunna have a better system then me then?