SharePoint Error

Every five seconds, our Windows 2003 server logs the following error. How do I troubleshoot? Thanks.

Event Type: Error
Event Source: Windows SharePoint Services 2.0
Event Category: None
Event ID: 1000
Date: 7/9/2004
Time: 9:01:48 AM
User: N/A
Computer: PUMA
Description:
#50070: Unable to connect to the database STS_Config on PUMA\SharePoint. Check the database connection information and make sure that the database server is running.

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