On 4/23/07 6:32 PM, Zane H. Healy wrote: > Considering how rock solid the system has been > on 10.3.9, I'll be really ticked off if 10.4.x is so picky that it requires > me to replace RAM. My good friend has a TiBook 500 that was fine up through 10.3.9. As soon as we put 10.4 on it, it stopped waking from sleep. We spent days troubleshooting, with no joy, including complete reformatting and fresh installs rather than upgrades. Nothing software-related worked, but removing the 3rd-party RAM (SimpleTech) fixed the issue. She purchased and installed a different stick from OWC, and all is now well, again.