I just backup manually all STG with NT backup (in Windows 2003) on my Exchange 2007 CCR and there are still old logs of 4 days ago. Is that normal? However the backup has completed sucessfully.

What about other events in the logs? Do you see where the logs are being truncated or is there any stating the logs cannot be truncated? (Event 225)

Humm how can I check if it truncated or not? For event 225, no there is nothing about that.

Hi found the prob. The prob was on my replication site, I stop replication and full backup clear the logs now.