Apple + Crucial = Ripoff
I'm on my third Apple notebook in a year - no problems, I've just sold/traded a lot. In each machine, I added RAM from newegg.com, which is FAR cheaper than Crucial - much less Apple. I added 1 GB to a 17" PowerBook, 256 to a 12" iBook, and 512 to a 12" PowerBook and have had no issues whatsoever, nor has anyone else I know who has purchased from newegg. Desktops too, I've added a gig to a G5 iMac from newegg as well. Most chips come with a lifetime warranty, so you have no real concerns. Prices, just to make you drool:
1 GB for 17" PowerBook - $160
512 MB for 12" PowerBook - $55
256 MB for 12" iBook - $24
1 GB for 17" iMac G5 - $90
That's just what I paid, you may be able to get even cheaper. Don't waste your money on Apple RAM. I've purchased from crucial once, and there is no performance difference whatsoever - the difference is purely on the price tag.