For us "clean-installers", a full Combo update, and not just the regular 10.6.2 -> 10.6.3 update that Software Update provides...
- One Nation Under A Groove -
So far, I have only updated one Intel Mini from 10.6.2 to 10.6.3 using the combo update. I did have to do a "safe" boot and then a regular boot for all the confusion to abate.
Everything works just fine.
"For what is age but youth's full bloom,
A riper, more transcendent youth" - Oliver Wendell Holmes
As well as I can recall, one of my Mail accounts was acting funny.