I was finally forced into updating to 10.4.8, because all of a sudden, Safari started getting very slow, and taking up all the cpu. . . like up to 85%, and holding there, so, after backing things up, doing a repair permissions, and running DW, I went ahead and downloaded the combo updater, and went for it. 2nd day, Safari is working fine, and no problems so far. I did take the precaution of unhooking everything except the keyboard. Was surprised (pleasantly), that it didn't bother to update iTunes, as it seems that each time you update it, there's more restrictions on it, so I have gotten in the habit of saving my old iTunes.