I’ve just finished updating my test server with Mac OSX 10.5.6. Both updates went without any problem and my setup was not affected in a negative way. Only had to get a new version of GPGmail. Every item had started after the reboot and worked according to expectations.
If you want to read more on what is affected in the updates I would suggest reading the Apple support site for the 10.5.6 update and the 2008-008 security update.
In case of doubt, please make a full bootable disk image backup with Cabon Copy Cloner before you start.
I will update my production machines this weekend when I’ve got some more spare time. If you want to be sure everything is allright please wait untill then.
Update: There was an issue with postfix, please read the update



Comments
10:36 pm
The 10.5.6 update replaced the postfix binaries with ones that did not include MySQL support and restricted the listener to localhost only for me, similar to the security update that happened back in October.
A quick recompile of postfix and edit of the main.cf had me back in business.
9:25 am
Steve, you are correct I’ll add another blogpost explaining the solution more explicitly.