I’ve installed the updates on all my test machines running Snow Leopard 10.6.3 and Leopard 10.5.8 and I’ve noticed the following problems:

Leopard

On Leopard there are the small known issues with postfix. To correct it perform the following steps after the updates:

Re-install postfix by going into your latest source directory you’ve used the last time and run

sudo make install

Next, comment out or delete the following line from ‘/etc/postfix/main.cf‘:

inet_interfaces = localhost

Restart postfix (reloading config does not work) with:

sudo postfix stop

Postfix should restart automatically (if not run sudo postfix start).

Snow Leopard

Could not detect any postfix problems which I find suspicious but I can’t find the same postfix problems on Snow Leopard. If you can confirm this please leave a comment.

To read more on the updates read the Apple Knowledge Base article on this update.

I had someone reporting a problem with php which got replaced, but he used the default apache installation. So if you use the default apache and did not compile it please check your version of php. It might have been updated.