10.3.8 -> 10.3.9: Is it worth it?

I tried to update our small dept. server, running without any problems on 10.3.8, to 10.3.9 before the summer. That broke Sieve, Squirrelmail and a few other applications. I managed to back out with some luck an a lot of help from AFP548 and Google, and haven’t touched Software Update since.

However, I figure Apple must have fixed the update (?), but I have not found any references to a successful upgrade, only a lot of posts describing all sorts of problems, like the ones I had. I guess all the rich guys have a Tiger now 🙂

So my questions are:

1 Is it safe and trouble free to upgrade from 10.3.8 to 10.3.9 or will the upgrade still break the server?

2 If not – is there a HOWTO or similar somewhere, to save time googling for answers (or a list of applicable forum posts)? OR is there a recommended procedure for uprades including what (and best way to) backup/back out if it crashes

3 If not #2, is it worth the trouble to go from 10.3.8 to 10.3.9?

Thank you,

Peter