In this situation a full backup was not possible to truncate the logs. Symantec Backup Exec was still backing up the databases every night though.

To cure this problem, a quick little fix:


1. Open up Microsoft SQL Server Management Studio
2. New Query
3. Type in the following and press execute:
USE [master]
GO
ALTER DATABASE[SharePoint_Config] SET RECOVERY SIMPLE WITH NO_WAIT
GO
USE [SharePoint_Config]
GO
DBCC SHRINKFILE ('SharePoint_Config_Log')
GO

Database size magically down to 24mb. Server is now happy, and running better.