Surely I can't be the only one; I'm surprised nobody else has mentioned their experiences here (apart from people who had installed the beta builds, for one reason or another). I've installed and am running 10.3 on my good ol' 466 Mhz Key Lime iBook. Installation was uneventful, and I've had no problems to speak of. Performance is more or less the same; perhaps *slightly* faster, certainly no slower. Battery life has been unaffected; I'm still getting just a bit more than 4 hours. (Though I'll admit, the battery had been removed during the installation. I used the AC Adapter during the process, but the battery is still relatively new, and I wanted to make sure it's completely discharged for the first few cycles.) In fact, the only problem I'm having is with the new, slightly condensed version of Helvetica that's part of the System; I can't seem to select the older version to view messages in Mail. That, and the little camera icons in the Internet Explorer "Scrapbook" are drawing incorrectly. I can't think of anything else. (I had more trouble reinstalling the software for my printer than anything else; and that was entirely because I had forgotten that I needed to download the most recent version.) Two caveats: I chose the "Archive and Install" route, instead of upgrading my existing files, and I ran Disk Warrior just before the installation, to make sure there were no existing problems that could have caused complications. (And based on advice I read elsewhere, I ran "Repair Permissions" soon after installation. Anyone else get a package from FedEx on Friday? BRIAN/bpearce at cloud9.net