September 11, 2009
Apple released osx update 10.6.1, it brings no new kernel.
Updating is easy, just hit install button in software update.
The update updates graphics drivers, so hd4850 users need to add their device-id to ATI4800Controller.kext before rebooting, its better to use update dmg for those users.
hd4890 Users – wait for patch for qe/ci
And about leopard security update, it has no new kernel or kexts, so should be safe to install