Re:It's a dry joint. (Score 4, Informative)

You don't even need to solder. Just disassemble the iBook (challenging enough!) and put some sort of filler on top of the graphics chip. I used a 3M rubber foot. Close everything up and the bottom of the case will keep the chip in place. I haven't had a problem in the 6 months I did this repair, and have continued to tote my iBook all over on my scooter.

That said, it's clearly a design defect, and should have been fixed by Apple just like the G3 iBook.