sorry to do this but i am slightly confused this morning i opened my ibook to see all types of screen artifacts and the screen flashed on and off and lines apeared i thought ahh my logic board has failed again so i closed it and went off to tell my dad and when i came back all artifacts had dissapered and they have not com back this is my theird logic board i had it replaced once in warrenty and once under the program and i am keen on bitching and moaning my way into getting a nice new ibook g4 what are otheres experiences on this and how many logic board replacements did they have to do?