[Zope] Zope and MySQL

We hadn't dabbled with Zope and database connectivity before, so we decided to initially try getting it connecting to MySQL. After some initial problems, we got this working fine with one exception. If our server has to be restarted for any reason, then the rpm of MySQL that we installed stops working (amongst other things, the socket seems to disappear off the server!). So, each time the server is restarted (not very often thankfully), we have to reinstall MySQL. Anyone hazard a guess why it's doing this? Richard H.