We already have one of those.
The DB interface is all custom, except for mySQL-Front which we use for maintenance. My "site" is a very intensize web-app, so every interaction is from the web through SQL commands.
I see nothing in the Event Logs that reference the mySQL client.
The error is always: mySQL Client has run out of memory.
I reset the key buffer nightly and I can see the usage in the mySQL Administrator program, but I don't see indicators for the other two keys. It looks like I can add them, but I need to know the formulas to do so.