When you configured the SharePoint logging as default, it is very much possible that the logs are filled with "Preserving template record with id....." messages. You would expect these messages only to be logged when logging is set to Verbose mode.
The question how to solve this issue has been asked a lot on the Internet, for example on the MS Forums. Unfortunately nobody had a real answer. But since a couple of months, Microsoft fixed this issue. The April Cumulative Update now contains a fix for this issue:
When you set the least critical event to report in the Event log to ERROR, and you set the least critical event to report to the trace log to MEDIUM, the following messages are logged in the Unified Logging Service (ULS) logs:
Preserving template record with size…
Deleting template record with size…
However, you only expect these ULS messages to appear if the logging level for General is set to Verbose.
Just install this update and you are good to go!!