I recently upgraded from 3.0.6 to 3.0.11.
I have a few simple mods installed, so what I normally do is to reapply my mods on a fresh installation of the latest version, then put the upgrade system and upgrade from the old version to the new version - (ONLY DB upgrade, I quit when it asks me to merge the files, etc...) and I then just overwrite the files with the new patched files (I basically move the old folder, put the brand new one, copy the configuration and move the uploaded files...)
It worked fine for up until now.
when I upgraded from 3.0.6 to 3.0.11 everything seems to be working fine (it does, actually) the main admin page says that I have 3.0.11 but admin/system tab shows that I still run 3.0.6.
Did I simply miss on a simple step in the upgrade process? the DB upgrade seems to be okay as the forum is running for a month now with no issues at all...