Problem with MySQL error in event logs

I'm still troubleshooting why we suddenly can't pull mail in, and checked the event logs.

I found the following entry several times. I enter it not only because it could be a legitimate error, but because the quoting of the message has a single quote to open a phrase, and a double quote to close a phrase. In programming, such mistakes often lead to problems as code gets absorbed as a quote, when the quoted material should have been contained to a single line or paragraph. (Or in super-admin parlance, "Bad things happen.")

The error is registered as a warning and says:

Can't open and lock time zone table: Table
'mysql.time_zone_leap_second" doesn't exist trying to live without them

For more information, see Help and Support Center at
http://www.mysql.com

That's the EXACT text. You'll see the single quote in front of mysql.time_zone_leap_second, and the double quote just after that same string.

Justin