I am the original owner of a 12" G3 ibook. It is on its 3rd motherboard. The 3rd board was put in a while back (can't remember, maybe 3 yrs ago...long time ago) under the extended warranty. Well, I just took a look and noticed that they replaced my 900Mhz board with an 800Mhz one! I don't know if that happened on the first pcb replacement or the second one. I never suspected they would do that, so I never checked back when the boards were replaced. I'm kinda pissed now! My only real disappointment with this machine is internet video playback from youtube and hulu is so choppy it's unwatchable, and I'm thinking maybe it would be ok if they hadn't stolen 100Mhz from me. I suppose at this point there's nothing I can do about it, but I'm wondering if anyone else has heard of them doing this?