I have a number of instances of phpwcms on one mysql server each with a different prefix. Upgrading is more tricky than it needs to be because it is not readily aparent from the database what software version the database is patched up to.
I would like to suggest the addition of a field in a system table into which is stored the highest patch level sucessfully applied.
The upgrade.php script could then use this and offer a more automated upgrade path.
James Savage