I used the 10.62 Combo Update to go from 10.6.1 to 10.6.2 on a Macmini3,1. Two days of no problems, so far.
I did have to update UUIDs in the GPGMail bundle and put it back after Mail rejected it.
Only problem that I've run into is with the Finder quitting if Spell Catcher is active. Evan is working on a fix and hopes to have it out in a couple of days.
"I really need a new tagline"
—P M Evans