ive had booting problems for a week or two now. my G5 dual 2.5, 6gb mac wont boot up at all. sat on the phone with applecare for an hour and everything, no results. i visit the apple store in galleria mall of florida today, and im told the only solution may be a new motherboard price? $873.44 labor? HA! $135 came out to just over $1000. is there somewhere that i can get a "logicboard" other than apple direct? or another place i should go for a better evaluation?