So this is amusing. Sorta. I know my TiBook 550 has a two prong cord for its white brick adapter. And my 1Ghz iBook has a 3 prong cord. And I was pretty sure they are both the same wattage (45), so I go look at the TiBook adapter, and it shorts out - shooting sparks, ozone, blown out cord (output to TiBook) and everything. The whole shebang, except for the burning the house down part. Luckily I have a yo-yo adapter that works with the TiBook just fine. But I'm also a little paranoid about those adapters now.