
I always do a fresh install
no problems here, having a separate Home partition always helps, left that on ext3 but I also always recreate my profile by renaming it beforehand then moving the data into the newly created profile. Another bonus is that on my laptop the locking up problem seems to have been fixed, I never found out what it was on 9.04 but I suspected the ATI graphics support.
Now I'm waiting to see what Mint has in store for us.