Well, I've just gotten my new iBook (1.33 Ghz, 1.5 GB RAM, 60 GB HD), and as it was originally from someone else, I did a fresh erase and install of the OS. Since then, my CPU usage has been always above 95%. The culprit seems to be mds and mdworker, taking up anywhere from 75-80 of the CPU use. (okay, once I saw it drop down to 40-something) From what I've researched as to why this is, mds is part of Spotlight, and it's going through my entire HD and indexing everything since I've erased/re-installed everything. So...I assume that once Spotlight is finished indexing everything newly installed on my harddrive, my CPU will drop back to more normal levels? Does anyone know how long then it'll take for the indexing to calm down? Thanks!