This isn't really my area of expertise, but OS X Server comes with MySQL installed, and it looks like that's what's starting up. If you want to upgrade the built-in version, try the upgrade instructions linked:
http://developer.apple.com/internet/...urce/osdb.html
Edit: sorry, I misread your post, this probably isn't much help.
__________________
Power to Burn.
At speeds of up to 733MHz,
The most powerful Mac in history
burns CDs, burns DVDs, and
burns Pentiums
- apple website, oct 4, 1999. advertisement for the powermac g4