Apple released the much anticipated 10.5.7 update to Mac OS X today.

PLEASE be sure to have a fully tested backup before installing the update. Also, unplug that backup drive and any other USB or FireWire devices before your run the 10.5.7 update. It is also a good idea to “restart” your computer BEFORE running the update, and install the 10.5.7 update before running any applications.

In general, MacMedics does not recommend that you install this update on a production machine. We also suggest that you not install the update the very same day it comes out, in case the update is recalled for any reason.

See our update warnings page for all of the things to watch out for.

http://www.macmedics.com/updates.htm

Also, see our full 10.5.7 post from a few days ago: http://www.macmedics.com/blog/?p=615