I have 2 internal hardrives, I recently installed 10.4 on the bigger of the two (the one that was not stock and is not the master)... everything installs fine, everything works. I go through mail and set all my preferences, i change the dock icons around to the order i want them, set my itunes preferences, etc.... I restart the computer and POOF, all the things i just set are back to defaults! What on earth is going on here? I remember this happened when I got this hard drive probably a year ago.. I installed Panther and had the same problem. So I gave up and just used it as a backup hard drive, I figured the problem would go away when I installed Tiger. No such luck. Is this some sort of strange setting on the hardrive that makes it do this? I have no clue.