If you're smart you'll use the shareware package inspector, Paranoia, to snoop through the packages and tell you what the update's really doing before applying

If you're smart you'll use the shareware package inspector, Paranoia, to snoop through the packages and tell you what the update's really doing before applying it. Most software updates (application updates / security updates / Safari+iTunes+QuickTime will work fine. Its the 10.5.X updates that might break something.