hi everyone,
i just wanted to chime in. i've got a 2.8 Ghz, 24" aluminum iMac. it has had freezing issues since day one. it only froze once before the tiger 1.2 update, then froze multiple times a day after installing 1.2. i reverted back to 1.1 and while i did get an occasional freeze (maybe once or twice a week) it was much better than the multiple times per day uner 1.2.
after upgrading to leopard, it was back to daily multiple freezes. now, after installing 1.3 for leopard, it still freezes. 🙁 no better, no worse. i reset the PRAM after installing 1.3 as well. hardware tests don't show any errors, btw.
the issues range from a screen freeze, to a screen "black out", to white streaks accross the screen. i can force a freeze by openeing the screen saver panel, select arabesque and either moving the control panel or moving my mouse quickly accross the dock. often, time machine will cause a screen blackout, as will front row.
i have no 3rd party RAM installed.